Main > Monitor/Video Forum
Help repairing/replacing this Wei-Ya chassis
ahofle:
--- Quote from: Ken Layton on March 25, 2020, 12:32:54 pm ---There must be a label on the flyback with part numbers.
Could be a possibility the B+ voltage is too high and the safety shutdown circuit isn't working.
Is there cracks in the flyback?
--- End quote ---
I don't see any obvious cracks other than the singe marks where the arc'ing occurred. I will try and get more pics of the flyback this weekend. I've already desoldered the damn flyback twice attempting to replace with one from a Wei-Ya universal chassis which just made a weird whistling sound every couple seconds. I am thinking of trying more grounding like you suggested. This is an 8liners monitor that was shipped out way back when they were selling 19" CGA monitors and I kept it around as a spare...it is clearly a used frankenstein monitor. I am good with ditching the entire chassis and flyback, just need to find a replacement. Are the recent Wei-Ya universal chassis pretty much all junk?
grantspain:
the issue is matching the correct yoke, you have a high impedance yoke on your tube so your chassis must match
the problem with many of the weiya chassis is that they are clones made in china and therefore the flyback may or may not be different and the circuit layout slightly different
i work on a lot of chassis and every single weiya/clone of this design that i have ever had come in for repair the flyback is bad
if you do an online search you will find a matching new chassis-yoke specs, tube size,power input type and neck pinout are all considerations when purchasing a replacement chassis
ahofle:
Where does one even buy replacement chassis these days? I can't seem to find anything as all the old places are gone.
grantspain:
aliexpress and ebay
timeharvest sell on aliexpress and there is a u.s based seller on ebay
ahofle:
Added a bunch of grounding, but same thing (arc'ing' flyback). I took off the bad flyback and took pics of it -- also took pics of the chassis without flyback. If anyone has a replacement flyback in mind I would really appreciate any links. Or even a replacement chassis. I saw some more of the high impedance wei-ya chassis on aliexpress...is that my best bet?