CE Tech Tips – March 2015

CE Professional Tech Tip Sharing

March 2015

**NOTICE**

Due the danger and complexity of electronics repair, the following shared
technical tips are intended for professional reference only. Please refer to
manufacturer’s recommendations as Encompass does not guarantee the accuracy,
reliability or safety of this information.

GPX DV6000-09 
TV/DVD Combo

Reason for Service: 
Dead

Solution: Replaced C506,
12uF/100V Non-Polarized cap.

Hitachi TV, 46UX12B

Reason for Service: No customer convergence adjustment from the on-screen
display

Solution:  Replaced IC-1501 and ZD-1501.

Reason for Service: No sound

Solution:  All the following had to be replaced: IC402, D409 and
410,  D413 and 414 and F-936 was open.

Panasonic TV, PT47WXC43G

Reason for Service: 
No G2, (grid v ) on the red CRT

Solution: Replacing C312
fixed the set.

Philips TV, 50PFP5332D/37

Reason for Service: Dead, power lights blinks 6 times

Solution:  Replacing C601 and C609 fixed the set.

Samsung Plasma TV, PN58B540

Reason for Service: 
Turns off intermittently, cycles

Solution: Use the melody to
guide your troubleshooting.
Does melody play when set turns off?
       No – means power loss,
replace power supply.
       Yes – means the set thinks
it shut off normally.  Look at 1 of 2
parts.

If the TV plays a melody, that means it could either be the main board or
the function/IR board. When you hear the relay turn on, quickly remove the AC
cord from the wall.  Now disconnect the
function/IR connector from the mail board and replug the AC back into the wall.

Does the set stay on ?

No –  Main board bad

Yes – Function/IR board
bad

Sanyo TV,  DS31590

Reason for Service: 
Dead, maybe a surge

Solution:  Replacing the following repaired the set: fuse and
rectifiers, 5V regulator IC681, and Q681.

Toshiba TV, 42HP66

Reason for Service: 
Red sparkles in the picture

Solution: Found a bad cap on
the Y-SUS. C49, 33uF/25V.

Vizio TV, M3D460SR

Reason for Service: The picture is noisy, and will fade to white when it
warms up.

Solution: Before changing
the T-Con, check for a bad U205, 1.2V regulator.