Tag - sylvania tv repair

CE Tech Tips — September 2022

**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.

Insignia TV, NS-LCD47HD-09
Reason for Service:
No video, B/Ls okay.
Solution: Replacing U507 on main board fixed the set (was running very hot).

LG TV, 42LG50
Reason for Service: Picture solarized.
Solution: Found and replaced bad U21 on T-Con Bd. AS15F.

LG TV, 50PJ350-UB
Reason for Service:
Set starts for a second then shuts off.
Solution: Check/replace R927 & R929, both 22Ω/5W.

Protron TV, PLTV-32CM
Reason for Service
: Audio volume low and distorted.
Solution: Replacing two bad caps on main fixed set. CE6 and CE7, 100uF/16V.

RCA TV, RLDED5078A-D
Reason for Service: No video or OSD.
Solution: Replaced open fuse on T-Con, 3A.

Samsung LN-T2342H
Reason for Service: Dead set.
Solution: Found bad zener in power supply, DZB803.

Sylvania TV, 6432TFY
Reason for Service: Dead set, may chirp.
Solution: Found bad D653; replaced, 18V zener.

Vizio TV, E420VA
Reason for Service: Dead set.
Solution: Replaced small blue cap in power supply, C911, .01uF/1KV and F901, 5A fuse.

Vizio, VW42L
Reason for Service: Backlights strobing and making buzzing noise.
Solution: Replaced C421 in power supply and two 470mF/35V on master and slave inverter boards.

 

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CE Tech Tips — April 2021

**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, 60SDX88B
Reason for Service: Picture displays a pin problem.
Solution: Replacing Q657 fixed this set.

Hitachi TV, 42HDS69
Reason for Service: Set just clicks when powered on.
Solution: Replaced two 3300uF/100V caps in power supply.

Insignia TV, NS42L780A12
Reason for Service: Set had good audio, but no picture because no backlight.
Solution: In the power supply, Q801 and Q802 were shorted, (had bad solder) and R801 was burned.  0.1ohm/2W.

Panasonic TV, TCP50X5
Reason for Service: Dead, may be intermittent.
Solution: Replaced U203 on back side of power supply.

 

Samsung TV, PN51D550C1
Reason for Service: Six blink code when you plug in set, but set will not turn on.
Solution: Determined it was bad Y main, then found shorted C5020 on Y main.  Replaced C5020.

Sony TV, KDL40V2500
Reason for Service: Right side of screen had video strobing; left side no video at all.  Audio okay.
Solution: Found 3 bad caps in power supply, C6204, C6205 and C6207.
Replacing these fixed the set.

Sylvania TV, LC190SL1
Reason for Service: Dead, fuse blown.
Solution: Replaced Q601, Q602, R610, 0.39Ω/2W and D607 zener. Also check D605, D606.

 

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