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Has anyone repaired a Sharp LCD TV sub power board? I have had 2 of these blow an inverter IC. Replaced the IC but board still dead? PN is RDENCA323WJQZ

Chip is a TNY264PN. I can't find another suspect on the board that may have caused this problem.

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6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

  • 1 Answer

SOURCE: LCD TV Screen repair

I have a Sharp LC52XD1E TV , It has a crack on the screen needs a new screen can it be fixed and is it worth the repair?

Posted on Jul 03, 2009

brownline45
  • 310 Answers

SOURCE: Samsung LN40A530P1F LCD TV keeps blowing main

good day. your power supply is defective. maybe the regulator is shorted. you need a qualified technician to fix your problem.

Posted on Jun 22, 2010

  • 11800 Answers

SOURCE: My TV has a 17pw26-1

No, the voltages are just fine. The fault must be either in the PMW itself or in the HT transformer - and the only way to fix that is to replace the entire inverter board.

Posted on Oct 19, 2010

Warf135
  • 137 Answers

SOURCE: I have Toshiba 15

There are a few things that can cause this fault, but the most common is the High Voltage Capacitors that feed the backlights going bad. The invertor and power supply are on the same board (Vestel 17IPS01-2)

The caps are on the power supply board and are C355 & C356 (12pf 3kv) and C354 (4.7pf 3kv). If you replace these caps it will solve the problem in 99% of cases.

If replacing these three caps do not solve the problem then it may be easier to replace the power supply board... as fixing means replacing a tiny surface mount chip with loads of legs.

WARNING: The Power Supply/Invertor board can contain LETHAL VOLTAGES even when turned off and unplugged. if you are not sure, Pay someone to do it for you!

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Posted on Jan 26, 2011

budmrtn
  • 11361 Answers

SOURCE: Sharp Aquos LC-42DH77E 42" LCD TV TV appears to

The PNL-POW (LCD panel Power) and the PS-ON will be 0V until the main board send out the signal to turn them on, it is working.
Do you get backlights?
Did you check the fuses on the Inverter board? You power supply is working.
This service manual may match your chassis:
http://elektrotanya.com/?q=showresult&megnev=Sharp&megnev2=LC-42DH77E&kategoria=&kat2=all

Basic LCD monitor and TV troubleshooting guide:
http://www.fixya.com/support/r5093881-lcd_flat_panel_tv_troubleshooting_guide
http://www.fixya.com/support/r6150077-basic_lcd_monitors_troubleshooting
http://www.fixya.com/support/r7406380-tv_training_manuals
Failed TV and Monitors pictures: http://s807.photobucket.com/albums/yy352/budm
Learn about bad caps: http://en.wikipedia.org/wiki/Capacitor_plague
Parts: www.shopjimmy.com
Capacitors kit: http://lcdalternatives.auctivacommerce.com/Default.aspx he can make you a set of caps.
Or www.digikey.com, just make sure to use caps with low ESR, 105c, high ripple current and long life rating such as PANASONIC FM or FC series.

Posted on Jun 01, 2011

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