dvi port stopped working

[VJ]

Hello,

I have an Acer AL2223w monitor. Recently, the DVI port stopped working (it shows no signal), while the monitor nicely diplays the VGA input. I've found online that there are repair kits which contain the correct capacitors of the power supply board.

I have not opened the monitor yet, but is it possible that the failure of one port is due to a bad capacitor on the power supply board? Or would the problem rather be on the video board (for which I cannot find a repair kit - I may find a replacement board)?

Thanks,


Jörg

[Umfriend]

Not an EE or anything but I would think this unlikely. It would imply that the PS is working out of spec but that only the DVI electronics are sensitive enough to break because of it? I would think the video board itself, i.e., the DVI port and DVI specific electronics, are far more likley to be the culprit. In theory, it could even be that the port itself is broken.

[VJ]

Not an EE or anything but I would think this unlikely. It would imply that the PS is working out of spec but that only the DVI electronics are sensitive enough to break because of it? I would think the video board itself, i.e., the DVI port and DVI specific electronics, are far more likley to be the culprit. In theory, it could even be that the port itself is broken.

Yeah... not an EE either, but I was also thinking along those lines. It is no problem to find repair kits for the powersupply board, but it is much more difficult to fix the video board; I suspect this is because of the fact that the powersupply board uses easier capacitors to replace and perhaps also because it is more likely to fail in a "simple"way.
I will keep using the monitor in VGA mode until it dies completely. Opening it seems risky (breaking plastic, etc) and if it is unlikely to help in anyway, then why risk now...

[UtwigMU]

Find some local TV repair shop. In Slovenia they fix this type of problem for ~30 EUR.

[VJ]

Yes... but then it still is a 10 year old monitor. For about 50 EUR, I can find a similar spec'ed new one here in Poland. So there may be little point in having it fixed at a repair shop. If it could be fixed with a cheap self repair kit, then why not. But it works as it is now (on VGA) so I'll use it for now... perhaps something less easy to fix will die earlier...