Author Topic: Help with my first Plasma TV repair on Panasonic TX-P42UT30B TV (Read 12398 times)

cheeky2 · « **on:** June 03, 2015,11:40:43 »

Repaired quite a few LCD TVs however been given a Plasma to look at.
When powered on the TV has only a green led showing on the unit!
There is no other indicators ie flashing red leds on standby etc.
The 5V standby is ok i have the service Manual however any help would be great!
I have searched on the net without any success in finding a solution :(

Thanks in advance :)

Mulja tv repair portal · « **on:** June 03, 2015,11:40:43 »

fix2003 · « **Reply #1 on:** June 04, 2015,03:19:24 »

only seen one
dead caused by TNPA5457 (TXNSNINHUA) FETS short on SN PCB .

note
panel can be damaged by poor earthing check both panels SN and SS both for loose fixing screws.
Also flexi edge connectors are a pain to align .

downunder · « **Reply #2 on:** June 04, 2015,04:29:40 »

A short on the SN board will cause the red LED to flash code 7. All the Panasonics I've come across that have had a solid green LED but the TV showing no reaction, have been caused by the A board. Virtually unrepairable and really expensive.

Mulja tv repair portal · « **Reply #2 on:** June 04, 2015,04:29:40 »

cheeky2 · « **Reply #3 on:** June 05, 2015,12:16:55 »

Thanks for your help :)
I may have another quick look at it!
Just seen an A board for this tv for under £35 delivered mmmmmm...
Have a good week :)
Regards Anthony

tom66 · « **Reply #4 on:** October 13, 2015,06:05:07 »

definitely SN, even with green LED locked out, and no SOS7.
fixed a few of these, good TVs when they work

Mulja tv repair portal · « **Reply #4 on:** October 13, 2015,06:05:07 »

Mulja tv repair portal

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