Re: 2 Viewsonic VX1940W buzzing and no signal

Thanks for your reply selldoor.

It's exactly the same as the original post, didn't see point of adding more pics that were already submitted but I can certainly do that when on my home pc.

I am aware of the polarity in capacitors and to the best of my knowledge it was correct but I can see that as a possible answer since I didn't bother to look after it popped.

Since my purpose is to troubleshoot, right now my concern is not the quality of the capacitors. I have these on hand and once it has been...

Re: 2 Viewsonic VX1940W buzzing and no signal

I can also add that I tested the main filter cap out of circuit with a cheap chinese semi conductor tester (esr) and it showed .8 esr and ok uf.

Q: Does the board need to be turned on by one of the secondary pins in order to get correct main filter cap/TEA1530AP readings? I tested just the power board plugged in without any loads.

Re: 2 Viewsonic VX1940W buzzing and no signal

I'm a beginner amateur electronics troubleshooter that had the two 220uf 35v caps bulged. I have plenty of monitors and only working on this to learn as I can easily replace the board.

After following this thread I replaced both caps with some off brand new caps of the same values and immediately after applying power, one of them blew (the single 220uf 35v).
I decided to replace all the caps (except main filter cap) with generic stock caps i had with as close values but higher as i could just to take measurements....