Author - wpengine

CE Tech Tips — July 2019

**NOTICE**
Due to the danger and complexity of electronic equipment repair, the following technical tip is intended for professional reference only. Please refer to manufacturer’s recommendations as Encompass does not guarantee the accuracy, reliability or safety of this information. 

Hitachi TV, 57UWX20B
Reason for Service: Shuts down.
Solution: Horz output voltage and B+ okay; Horz output transistor collector has distorted waveform.  Replace TH01.

JVC TV, LT32DM20
Reason for Service: Set starts with OSD showing input, then shuts down.
Solution: One of the inverter transformers was bad; replacing it fixed the set. Found it by comparing to other transformers.

Panasonic TV, TH-50PZ80U
Reason for Service:  No picture or OSD after powering on; power light lit.
Solution:  Replacing A board fixed set.

Samsung TV, HLP5085WX/XAA
Reason for Service: Set makes squealing noise when powering on.
Solution: Replaced C540, 1uF/50V SM cap on DMD module.

Samsung TV,  LN-T3753HN
Reason for Service: At turn on, backlight flashes for short time, then no more backlight.
Solution: Replaced inverter.

Sony TV, KDL46W5150
Reason for Service: Set comes on for 10 seconds, then shuts down. Does this three times then gives 10 blink error code.
Solution: Try factory reset.  Turn power on, then immediately press and hold arrow up and press and release power button.

Vizio TV,  VP322HDTV10A
Reason for Service: No audio.
Solution: Replacing SM Q15 fixed problem.

Westinghouse TV, LD-3255VX
Reason for Service: Dead set.
Solution: Replacing U13/14 eeprom fixed set. TW61301-K032A69

How to Replace Front Load Washer Tub Filter

**NOTICE**
Due to the danger and complexity of electronic equipment repair, the following technical tip is intended for professional reference only. Please refer to manufacturer’s recommendations as Encompass does not guarantee the accuracy, reliability or safety of this information. 

Replacing Tub Filter in Electrolux Front Load Washer

In the Electrolux washer model EWFLS70JSS, the tub filter — also known as a coin trap — is found inside the tub by the pump hose. The filter prevents foreign objects from entering the drain pump. If the coin trap is damaged and debris is able to bypass the filter, the washer may not drain properly, or the drain pump may sustain irreparable damage and will have to be replaced. A clogged tub filter can also impact the draining process.

When a washer drains slowly or not at all, the tub filter may be damaged or obstructed and needs to be replaced. Before disassembling the washing machine, unplug the appliance and turn off the hot and cold water supply valves. Safety should always be a priority during appliance repair, so please protect hands and eyes by wearing work gloves and goggles.

Instructions

  1. Begin by pulling the washer forward and away from the laundry room wall. Next, at the back of the unit, disconnect the hot and cold fill lines from rear panel and detach drain hose from wall. Then, start unthreading the screws holding the main top to the machine. Once screws are removed, pull top back a few inches, and then lift up and off the washer.
  2. Underneath main top, locate power cord wire harness. Disconnect harness by pushing down on locking tab and pulling wires apart. Then, pull green grounding wire off top edge of rear mounting bracket. Using needle nose pliers, push small plastic mounting tab (holding power cord wire) out of washer’s metal bracket.
  3. Loosen and remove screws securing rear mounting bracket to washer’s upper cabinet. Once top and back screws are removed, lift bracket off washer.
  4. Now, take out all screws holding main, rear panel to washer. After all screws are removed, locate drain hose on  back panel, and unthread screw securing drain hose retainer to panel. Then, kneel down near bottom left corner of back panel and remove screws securing washer’s control board to panel. Finally, lift main, rear panel up and off your machine.
  5. Take drive belt off back of tub by gently tugging on belt while rotating drive pulley.
  6. At this point, look under tub and behind washer’s control board to locate tub to pump hose. Once you see it, reach inside washer cabinet and place towel under hose to catch any water that spills when disconnecting hose from the tub.
  7. Once towel is in place, use pliers to release hose clamp securing hose to air chamber shaft. Then, pull hose off  air chamber shaft. Next, use screwdriver to loosen hose clamp screw, securing hose to tub opening. Once screw is loose, slide clamp down and pull hose off opening in outer tub.
  8. Reach inside hose and retrieve tub filter inside. Note: filter may be filled with foreign objects and covered in unrecognizable gunk. Shake debris out of filter.
  9. After inspecting old tub filter, use screwdriver to pry filter cover off damaged part. The new tub filter does not include a new cover, so you’ll need to use the old cover on the new filter. The cover is held in place by four locking tabs: disengage tabs with screwdriver and pull cover off damaged tub filter. Before putting cover on new tub filter, rinse it thoroughly with water and optionally, mild detergent.
  10. The new tub filter is now ready to be installed. First, position filter cover on top of the tub filter and push down to engage locking tabs. Then, slide tub filter into tub to pump hose. The tab on the filter should line up with small slot inside the hose. Once filter is in place, reinstall hose to tub opening. Slide hose clamp up the hose, and tighten its screw to secure hose to tub connection. Next, push hose onto air chamber shaft and replace  clamp to secure hose.
  11. With the new tub filter installed, start reassembling washer. First, take washer’s drive belt and loop it around the motor pulley. Then, while slowly rotating drive pulley, carefully stretch drive belt around it. After belt is installed, turn drive pulley in both directions a few times, ensuing drive belt stays on and pulley is not restricted by any obstructions.
  12. Align rear panel with back of washer and secure with screws removed earlier. After installing rear panel screws, reattach screws that secure control board to washer’s back panel. Then, replace drain hose retainer and rethread its screw to hold  component and drain hose in place.
  13. Line up rear mounting bracket with holes in washer frame and secure with mounting screws. Next, locate power cord wire and plastic retainer attached. Push retainer back into small opening in reinstalled rear mounting bracket. Reattach grounding wire to edge of mounting bracket, and reconnect power cord wire harnesses.
  14. Pick up main top panel and place on washer, leaving about an inch or two of space between panel front and washer front. Then, push panel forward to lock in place.
  15. Finally, reconnect fill lines to back of washer and reattach drain hose to wall. Next, reposition the washer against laundry room wall; plug in; and turn on hot and cold water supply valves.

Special thanks to Fred’s Appliance Academy for this helpful tip!

 

 

CE Tech Tips — May 2019

**NOTICE**
Due to the danger and complexity of electronic equipment repair, the following technical tip is intended for professional reference only. Please refer to manufacturer’s recommendations as Encompass does not guarantee the accuracy, reliability or safety of this information. 

Hitachi TV, 60SX2K
Reason for Service: Loss of color
Solution: Replaced X-501 and C508.

Magnavox 32MF30301B
Reason for Service: Power supply fix
Solution: Replace the following: Q600 & 601, D607, 610 & 640,  R608 & F601.

Panasonic TV, H50PE70U
Reason for Service: Set shuts down when trying to turn on.  Shows 12 blink error code.
Solution: Ohm speakers for a short, unplug it if one is found, then try set again.  Replace shorted speaker.

Philips TV, 40PFL3705D/F7 (Serial # beginning with YA1)
Reason for Service: No picture, but has backlight and audio
Solution: F100 on panel controller board was bad.  Replace with 3.15A SMD.  #PNF10148.

Sanyo TV, DP42647
Reason for Service: Set has black screen, but sound okay
Solution: Found shorted diode on T-Con board: CP4, SR34

Sharp TV, LC-52C6400U
Reason for Service: Dead; error, one long, one short.
Solution: Found bad diode on power board: D7805.  MUR460.

Sony TV, KDL-40V4100
Reason for Service: Picture solarized
Solution: Look for bad AS15 chips on T-Con.

Toshiba TV, XV645U
Reason for Service: Dead set; all fuses okay
Solution: Replacing IC Q880 fixed set.  STRY6456.

Vizio TV, L37HDTV10A
Reason for Service: Set locks up when going to tuner setup on digital input.
Solution: Replaced digital tuner board, #3370-0052-0187.

Accessing and Testing Microwave Door Switches

**NOTICE**
Due to the danger and complexity of electronic equipment repair, the following technical tip is intended for professional reference only. Please refer to manufacturer’s recommendations as Encompass does not guarantee the accuracy, reliability or safety of this information. 

WARNING : Disconnect the microwave from any power source before moving forward.

Microwaves include three switches located behind the control panel: primary, secondary and monitor switch all actuate to keep the microwave from cooking the kitchen while the door is open.

Accessing the Switches

  • Remove the two Phillips screws that hold grill in place on top of microwave. Remove grill and lay aside.
  • Locate and remove the one Phillips screw that holds the control panel in place.
  • Lift up control panel and gently pull toward you. This will provide access to the three switches.
  • Remove all wires from control board. All wires are different from each other and will only fit on the terminal they were designed for.
  • Use needle nose pliers to remove connectors from terminals that can’t be removed by hand. Gently squeeze  connector to release it from the terminal.
  • The last wire to remove is the ground wire, which is connected to the microwave frame. Set control panel aside.
  • Remove  access cover and set aside.

How To Test the Switches

  • Set the multimeter to OHMS to test the three switches.
  • Please note that the primary and secondary switches are tested with the door open. With the door open, place the multimeter leads on the connectors on the primary switch first. When closing the door, the multimeter should produce a beep if the switch is good.
  • Test the secondary switch in the same manner.
  • Test the monitor switch with the door closed. When opening the door, the meter should beep.
  • If appropriate beeps did not sound on any or all three of these switches, replace the switch.

These three switches serve mainly to keep the microwave from operating with the door open. The switches also deliver voltage to the diode and magnetron which heat the microwave. If the switches test positive, this further confirms that magnetron has failed and needs to be replaced.

It’s time to button up the microwave. For most people, this is as far as you may wish to proceed. There is an ever increased chance of suffering a powerful electrical shock from the high voltage capacitor, which retains a residual amount of electricity. It will need to be discharged before the magnetron and high powered diode can be accessed and replaced.

Route the control panel wires back through the appropriate slots in the access cover and reattach the cover to the microwave frame. Reconnect the ground wire first and then reconnect all other wires to their compatible terminals.

Push the control panel back in place and secure with its Phillips screw. With the door open, replace grill cover. Opening the door makes it easier to replace the grill. Secure with its two Phillips screws. Do not over tighten these screws as the grill is made of plastic and it could break or crack.

Special thanks to Fred’s Appliance Academy for this helpful tip!

CE Tech Tips — April 2019

**NOTICE**
Due to the danger and complexity of electronic equipment repair, the following technical tip is intended for professional reference only. Please refer to manufacturer’s recommendations as Encompass does not guarantee the accuracy, reliability or safety of this information. 

Hitachi TV, 53FDX20B
Reason for Service: No picture or OSD, but power light comes on.
Solution:  Replaced C603.

LG TV, 47LM4600UC
Reason for Service: Set seems to turn on, but there is no picture, sound or backlight.
Solution: Found shorted diode on the power board.  D607, MUR460.

Mitsubishi TV, WD65732
Reason for Service: At plug in, green front LED flashes continually. Set won’t start.
Solution: Replacing DM board fixed this set.

Panasonic TV, TC-P55GT30
Reason for Service:  Top half of picture was bad. After a short time, set shuts down.
Solution: Check and replace shorted FETs on SC board. Put star washers under screws and tighten well.

Sears TV, 509.14370, (JVC)
Reason for Service: HV comes up, then set shuts down.
Solution: Replacing the following fixed set: LA7832, D541, R541, 1.8 ohm/2W and C424, 100uF/35V.  Check all solder in vertical area for bad joints.

Sony TV, KDL-46EX720
Reason for Service: Set powers up for just a second, then shuts down with a 4 blink error code.
Solution: Set had bad LED driver board.  Replacing it fixed the set.

Toshiba TV, 50H72
Reason for Service: Diagonal lines on white screen.
Solution: Found and replaced two bad 10uF SM caps in HD module.

Zenith TV B27A76 9-2067 module
Reason for Service: Dead set.
Solution: Found bad cap on unregulated B+ line. CX3407, 300uF/200V.

 

 

 

 

 

 

 

 

 

How to Replace Whirlpool Refrigerator Water Tank and Filter Head Assembly

**NOTICE**
Due to the danger and complexity of electronic equipment repair, the following technical tip is intended for professional reference only. Please refer to manufacturer’s recommendations as Encompass does not guarantee the accuracy, reliability or safety of this information. 

When a leak occurs inside a Whirlpool refrigerator, the water tank and filter head assembly could be at fault. This is the part that connects the water supply line behind the refrigerator to the filter and then to the inlet valve. In an area with hard water, buildup can clog or crack through the tubing. Following are steps to replacing the assembly with part #WP12956202.

1. Unplug refrigerator and turn off water supply
Always be sure to unplug an appliance before starting a repair. Also, because this repair involves replacing part of the water system, turn off the water supply at the local shut-off valve behind the refrigerator. The part being replaced connects directly to the supply line, so disconnect the supply line from the water inlet valve at the base of the refrigerator while you’re behind the appliance.

2. Dismantle refrigerator interior
As the assembly is mostly positioned inside the refrigerator, dismantle some of the inner paneling. To get started, open the doors and remove the right side shelving. (Just pull up to remove the
hooks from the rear brackets and slide them out.)

Next, locate the water filter cover at the top of the refrigerator. Press down the tab to open the covers. Turn the filter counterclockwise and fully remove it. Press the back of the cover panel free of the hinge pin, pull out the whole cover panel and set aside.

Remove the interior access panel in the middle of the right back paneling inside the refrigerator. (This is the panel with the four small holes around the perimeter.) To remove it, insert a flathead screwdriver into each of the holes to depress the locking tabs. For the top two holes, press in toward the opposite hole. For the two lower holes, press the screwdriver down to disengage the tabs. Tilt the panel down and wiggle the bottom free from its mounting tabs and set the panel aside.

Then, remove the upper access panel by inserting the screwdriver into the central hole along the bottom and disengaging the locking tab by pushing it up. Pull the panel out and set aside. The water tank at the back of the refrigerator’s interior is now accessible, as well as the filter head running up the back into the ceiling.

3. Remove old water tank and filter head
The water tank may still contain water. Before removing the old parts, place a towel at the bottom of the refrigerator to catch any leaks.

First, loosen the housing that holds the filter head at the ceiling. Do this by prying open the mounting tabs toward the front of the housing and then rocking the back of the housing free until the housing is supported only by the lines running up to the filter head.

Next, press down the tabs at the top of the blue water inlet valve so you can pull the small tube free from the top. Once it’s free, you can remove the transparent support housing around the tube. Also, pull the water line to the left out of the mounting tabs. Completely separate the housing bracket from around the filter head and set  aside.

Move to the rear of the refrigerator and locate the water inlet tube that was disconnected at the start of the repair. Loosen the screw that holds the tube in place. Push it down and remove the plastic retaining clip from around the tube. Then, remove all the screws holding the lower rear access panel in place. Set the panel aside.

Return to the front of the refrigerator. Start removing the columns of the water tank from the retainer clips. Once they’re all down, carefully pull the water inlet tube into the body of the refrigerator.

4. Install new water tank and filter head
Push inlet tube into the hole at the bottom of the refrigerator. Feed as much of the length through the hole as possible. Next, align the new water tank in the back of the refrigerator so the inlet tube is to the right.

Press the columns of the water tank into the retaining clips until they click and engage. This may have to be done one column at a time to make sure everything fits properly. Return to the rear of the refrigerator. Remove  protective cover at the end of the new inlet tube. Place the old plastic retainer clip on the new tube.

Reattach the rear access panel. Slip the water inlet tube through the bottom cutout and the power cord through the top cutout so nothing gets pinched. Then secure the panel with the screws around the perimeter. Next, attach the water inlet’s retaining clip to the middle of the panel and connect the inlet tube to the water supply line.

Return to the front of the refrigerator. Now install the new filter head attached to the water tank. Take the transport tube support from the old assembly and attach it to the filter head’s inlet tube. Also, attach the filter
housing to the filter head. It should snap into place around the arms at the top of the filter head.

Next, reattach the water tube to the inlet valve. Pry the blue valve slightly forward to make more room. Then, push the tube firmly into the valve. It should go all the way in until reaching the wider portion of the tube. Push  valve back into place.

Fit the longer water line into the groove along the left side of the cavity. Once the tubes are in place, attach the new filter head to the top of the refrigerator. Line up the back of the filter head assembly into the rear of the cavity and then press the cylindrical housing into place. All of the locking tabs should be heard to engage.

5. Reassemble the refrigerator interior.
Start by reattaching the upper inner access panel. Hook the top of the panel over the arms near the filter head assembly. Then, swing the panel until it is flush with the back of the refrigerator. Press firmly into place.

Next, install the lower cover. Slip the bottom of the panel into the groove, and then press the rest of the panel flush with the back of the refrigerator until the locking tabs engage.

Then, install the water filter housing cover: there is a hinge pin on either side of the filter head housing. Slide the matching hole of the hinge at the back of the water filter cover over one arm. Then slightly stretch the other side of the cover to reach around and grab the hinge arm on the other side. Take care not to crack the plastic. Before reattaching the water filter, twist and remove the bypass cap inside the filter head. Twist the water filter into the new filter head clockwise. Then, snap the water filter cover shut. Reinstall the shelves, shut the doors, and
plug in the refrigerator. Be sure to also turn back on the water supply.

Special thanks to Fred’s Appliance Academy for this helpful tip!

 

 

CE Tech Tips — March 2019

**NOTICE**
Due to the danger and complexity of electronic equipment repair, the following technical tip is intended for professional reference only. Please refer to manufacturer’s recommendations as Encompass does not guarantee the accuracy, reliability or safety of this information. 

Emerson TV, LC320EM3FA
Reason for Service: Dead set
Solution: Found shorted diode, D633. Replacing fixed set. NTE146A.

Hitachi TV, 53FDX20B
Reason for Service: No pic or onscreen display but power light does come on.
Solution: Found bad C603 and replaced.  

LG TV, 37LP1DUA
Reason for Service: Takes several attempts to turn on set
Solution: Found two bad caps, C114, 10uF/50V and C852, 470uF/10V.

Panasonic TV, TC-37LZ85
Reason for Service:  Dead; no standby 5v or 12V
Solution: Found D7006 leaky in power supply. 15V/1W zenner.

Samsung TV, PN51E550D1FXZA
Reason for Service:  Wi-Fi not working.  Set may cycle on and off.
Solution: Replaced Wi-Fi module. BN59-01148B.

Sceptre TV, X322BV
Reason for Service: Picture was flashing
Solution: Cleaned both ends of LVDS cable and applied Deoxit.

Toshiba TV, 55ZV6T50U
Reason for Service: Dead set
Solution: Replaced relay SR80 and R850, 1.2 ohm/5W.

Vizio TV, VX370E
Reason for Service: Picture solarized
Solution: Replaced AS15-F IC on T-con board.

Zenith TV, H24F36DT
Reason for Service: Remote will not work
Solution: Replacing eeprom, IC6001, fixed set.

 

 

 

 

 

 

Repair Business Management Course

Course Details

April 25, 2019, 8:00 am-4:30 pm
Fee, Lunch Included:
$199.99
(By March 15, 2019)
$249.99 (After March 15, 2019)

REGISTER NOW

NOTE: No shows and cancellations after April 20, 2019, will be charged the full cost of registration.


Running any type of service operation comes with many daily challenges. To help you effectively manage your business, Encompass has teamed with the pros from Fred’s Appliance Academy to lead this class. It will cover a number of topics to help keep your repair business running smoothly:

  • Charging for services
  • Marketing to the local service area
  • Recruiting and training new office and field tech staff
  • Part inventory management
  • Warranty billing workflows
  • Routing technicians
  • Managing customer communication

This will be an interactive course with brainstorming workflows and solutions to start making a difference for you and your customers in 2019 and beyond. Please click here for additional details provided by Fred’s.