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The Y-SUS BOARD is for picture in
tv.if the picture is not coming or not proper the Y-SUS board needs replacing
.but if the picture is blurry or with linings reparing helps.but in your case
the tv does not turns on with y-sus board connected only error led comes
on.this means y-sus board needs replacement. you can get it from www.partstore.com --------- if you are not familiar with replacing the y-sus board its advisable to get it done by local tv repair technician familiar with your brand/model. ---------- This will help.Thanksplease keep updated.please do rate the solution
if helped.thank you for using fixya.
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you will need to replace the two convergence amp ICs they are STK392-110 you can get replacement ICs at the following link and they provide free instalation instructions with pictures.Here's the link. http://servicemanuals.vstore.ca/
Just finished one of these here at the shop. There is a service bulliteen from toshiba on these. There is a series of 11 16 microfad service mounted caps on a cuircit board called the hypermodule... basically the main signal processing board. that needs to be replaced. very very tricky soldering. very dificult repair. We charge about 250 in labor pluss the parts
Bad caps and solder connections, especially in around the 9v regulator just about center of the defection circuit... Not a terribly expensive job and certainly worth the repair if the cabinet is in good condition...
Bill
What i would do id purchase a can of freeze from radio shack wait till the picture is good then freeze one ic at a time till the problem shows up, once it shows up let it warm back up and refreeze to make sure you got the correct part. found this on anther site: My first guess is an electrolytic cap in the main power supply and/or a voltage regulator that feeds the deflection amplifiers.
The cost of repair is not much; the greatest challenge is finding the
bad cap because there are so many of them and scattered through out the
sections.
If you have a scope and can look at some waveforms and voltages around
the deflection and power supply feeds you may be able to zero in on it
right away
F850 and F851 were blown soldered in new fuses and keeps blowing F851
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