Main > Monitor/Video Forum
Chinese Chassis , need help.
abispac:
So yesterday i bought a monitor 19 inch, for next to nothing, it had one chassis, but since it had a clearly blown cap, i ask the guy if i could take another chassis he had laying around so maybe out of the 2 i can make a working one. Anyway bot chassis are very similar, i tested both and i hear noise, but not as the loud noise all monitors make when they turn on, also there was no static on the screen, and the screen looks black, no white noise image. I know i do have to make a cap change, especially the big one, but im just asking for advice, anything else i can look for? both chassis build a charge, as when i discharged the monitor i could hear the big spark comming out. , thanks for any advice.
lilshawn:
I can count on one hand the number of big main filter caps i've had to change, and i've been doing repairs for 12 years. i'd suspect this marked cap...(see attached)
mainly becasue the sleeve has moved down over the edge of the cap body...meaning it's gotten really hot and shrunk the sleeve.
abispac:
Thanks for the advice, i dont have a cap with the same values at the moment, im gonna buy it tomorrow, but wont have a chance to test it till Monday, but, on a closer inspection, that part i highlighted in red was loose and flamed, i did check it for continuity and it came out, good, so for now, im a solder it, and test it to see if it works, if not, im gonna have to buy it to. Also , the other chasis its near identical, but the dont have the same caps, and it does not have that loose part , but definitely the big main cap needs to be replaced as its does look blow, ill post a picture later.
abispac:
so after soldering that part on chasis number 1, the monitor turned on with a unstable image, hope someone can tel me the fix, in the meantime chasis number 2 i do believe the main cap its blow, just look at the picture and see that extra round at the top, like its inflated. wat do you think?
chasis number one video
https://streamable.com/zc4yq
abispac:
chasis number 2 looks totally dead, and cant find avius things, beside the burnt area, and the main extra round giant cap, one thing its curius althought its dead, the monitor builds a little charge, not to loud but a good one.