Mulja tv repair portal

Equipment Repairs => LCD TV forum => Topic started by: billy no mates on December 12, 2011,17:30:59

Title: techwood 42832 hd fault
Post by: billy no mates on December 12, 2011,17:30:59

hi
i hope someone could possible help me out
i was given a techwood 42832hd digital tv a few weeks ago
original fault was no power stuck in standby
changed all caps for new decent ones in power supply 17pw16-2 v2
and tv powered up with a white screen after being restarted a few times i got a normal screen with search for channels but with lines ripppling across the screen after so long these would freeze and the the screen would slowly fade until a completely white screen
power board has been checked and all voltages are stable e.g no fluctuating 24v supply solid at 24.4v as are all others
i was thinking t con board but thought id ask on here

thanks for any advice anyone can give on this in advance
 regards
billy

ps other boards are

17mb12-3 v2 main board
and auo T370xw02 vc ctrl bd (37T03-C00 ) t-con

Title: Re: techwood 42832 hd fault
Post by: billy no mates on December 13, 2011,18:15:12

please someone help im driving myself round the twist with this problem  :41:

Title: Re: techwood 42832 hd fault
Post by: g*****s on December 14, 2011,02:23:43

Not familiar with this set,but sounds like either t con or screen.Good luck.

Title: Re: techwood 42832 hd fault
Post by: billy no mates on December 14, 2011,05:41:57

thanks for the reply :) im hoping the t-con

Title: Re: techwood 42832 hd fault
Post by: billy no mates on December 15, 2011,16:09:29

hi guys

ive been looking for a new t-con board for above set ....but from scouring the tinternet for hours im beginning to think the t-con board the was in the tv originally was the wrong one, the one that was in was :-
auo t370xw02 vc ctrl bd (37t03-c00 )
which while i was searching for on one site it was listed for a 37" model

on the site i looked for new parts its a completely different board
http://tvpartsfixit.co.uk/?SiteMap=Yes&Manufacturer=Techwood&Type=LCD&Model=42832+HD+DIGITAL&Search=6870C-0204B

so i dismantled the set again looking for the lcd panel model and got this

manufactured 08/37
model no:- T42xwo1 vc
au optronics xxxxg
made in china (sii)

but i cant seem to find any way to comfirm which t-con should be fitted

please does anyone know of a good site that i can cross reference the screen to t-con or any other way of checking ??

thanks guys for any help
regards
billy  :13:

Title: Re: techwood 42832 hd fault
Post by: In_Focus on December 15, 2011,16:40:12

Not a t-con fault, definitely screen fault. Major problem white screen from cold with AUO panels due to poor tab bonds, Chinese and Turkish rubbish but keeps me in work :yahoo:.

 To confirm give the bezel a thump and it will bring back the pic for a spell.

Title: Re: techwood 42832 hd fault
Post by: billy no mates on December 15, 2011,16:51:03

ok cheers ill try and get back to you

Title: Re: techwood 42832 hd fault
Post by: billy no mates on December 16, 2011,19:51:24

hi in-focus and everyone else  :051bye:

i did as you suggested ..i put the Tv back together earlier this  evening and gave the bezel a good old thumping and no difference i have videod the fault for you to see the standby light going off and on is me turning the TV off and on with the remote ..just thought id say, so not to confuse anyone thinking that this was part of the fault videos to follow shortly im currently uploading to you tube i will post links when done


regards
billy

Title: Re: techwood 42832 hd fault
Post by: billy no mates on December 16, 2011,20:08:07

here are the videos


http://www.youtube.com/watch?v=yaOolhdsF-Q




http://www.youtube.com/watch?v=8zNzuShj4jw

hope this help shed some light on the fault ...and i hope it helps with suggestions of what to try next

cheers guys

Title: Re: techwood 42832 hd fault
Post by: billy no mates on December 17, 2011,17:21:26

Any thoughts guys

thanks
billy

Title: Re: techwood 42832 hd fault
Post by: In_Focus on December 18, 2011,15:52:36

99.999999% duff screen I'm afraid. Classic symptoms for an AUO panel. :c023:

Title: Re: techwood 42832 hd fault
Post by: billy no mates on December 23, 2011,13:30:17

 :93: :93: :93: :93: :93: :93: :93: :93:

t-con board changed and hey presto WORKING TV

Title: Re: techwood 42832 hd fault
Post by: sparky on December 23, 2011,14:11:02

hi
good job but 9 times out of 10 screen faulty
dave