130 volt powersupply only 104 volts ,adjustment has no effect on voltage.
any one know what is wrong?
thanks
mack
I fixed my problem,it was the optocoupler no 7412 on the large signal board,the TV
wouldn't come on at first,so i disconnected the audio amp and convergence
boards to check for a short,after which it started to stay on,with them disconnected. I was then able to check the 130 volt supply.It was only reading 104 volts and would not respond to any adjustment to the pot. when i changed the 7412 opto the 130 volt supply started working and i was able to adjust it.Now if i can replace the crt coolant and put it back together without breaking anything.I purchased the optocoupler from
mauser electronics the number is HCNW136-000E for $1.80 each
PS:figured solution after reading a few post.
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