Electronic equipment repair and service manual search discussion :: Topic review - bush dvd142tv (tv/dvd combi) stuck in standby (vestell ak46)

HappyXmas · Posted: Sat Dec 23, 2006 2:07 pm Post subject:

Hi.
This was a very useful tip - thanks Smile

Just reparied a set with similar symptoms. Except with this one the TV worked but no picture, and wouldn't switch to DVD. Tray wouldn't eject or anything. This had been playing up on & off for a month or so, but then went completely. Still got TV sound, but nothing else worked Sad

Found 2 dry joints on the LOPT. Re-soldered and alls well again Smile

NB: Without this I may have spent ages looking for PSU problems Wink

Don't have a manual or CCT for this, but I guessed that the LOP stage generates the power for the DVD section. Anyway - all fixed now Smile

Thanks a lot.
B.

Guest · Posted: Mon Dec 18, 2006 5:43 pm Post subject:

never had this before, but good luck.

jonnyboy · Posted: Fri Dec 08, 2006 7:06 pm Post subject:

thanks for that john, did the bu508dfi fail straight away nearly or did it take a whilke as when it failed on this set it was almost instant. is it ok to use a bu508df in place of a bu808dfi? thanks again, jon.

Guest · Posted: Thu Dec 07, 2006 9:29 pm Post subject:

Hi there, had the same problem with two of these! Take a very careful look at the soldering in the lopt area. I found many components with one leg not fully pushed through the board before soldering and many suspect joints. One ate
5 BU508DFI's before I found the bad connection!

Regards
John.

jonnyboy

hi, this set is stuck in standby but when turned out of standby trips and returns to standby, on inspection i found the lopt was badly dry jointed, i reflowed it and tryed again, it was still the same so i checked the line output transistor (bu808dfi) but this seemed ok, to check this was ok i swapped it out for a bu508dfi and turned the set on, the eht started but then the transistor went totally s/c.has anyone had a similar problem or a diagram? could it be the lopt shorted? the ht is around 114v and the chassis is a vestell ak46, thanks for your time, jon.