VX912 with FSP035-1PI01

[jonsky7]

Good day to you,

I'm wondering if you could assist me in repairing the powerboard of my Viewsonic VX912 with a FSP035-1PI01 please.

The screen does the blinking on/off problem. I successfully repaired it once before, same issue, using info on this site, of which I am very grateful. It worked for another 18 months or so. At that time I replaced the 2 capacitors, C661 and C664, on the lower right of the board and they still look in good condition, though I understand that it is not a guarantee that they still work.

I would be very grateful if someone could have a look at the pictures and suggest a possible fix. C662 looks a bit bulgy, a good start maybe? Do I just cut off the cover to reveal values?

I did try a replacement second hand board and that gave a different problem, power led is on but screen remains black. With this original board I do see a picture for a split second before the monitor resets.






Again, most grateful for any input.

Jon

[budm]

Re: VX912 with FSP035-1PI01

C662 (cap wrapped in balck shrink tubing by the connector) is bad, top is bulging, that cap is part of the Pi filter for the B+ that is used for running the main/logic board.
You need to remove those brown glue also, some of them already turn dark brown which mean they are conductive.

[Lumberjack777]

Re: VX912 with FSP035-1PI01

Yes, you need to replace C662. Make sure to use a good quality, low esr, 105C capacitor such as panasonic FM series. Or Nichicon. That capacitor is definitely bulging.

***budm*** beat me. He must be a faster typer

[jonsky7]

Re: VX912 with FSP035-1PI01

Thanks, will do

This one ok? http://www.ebay.co.uk/itm/3606445289...84.m1497.l2648

And is it important to heatshrink the new one?

Thanks guys!
Jon

[jonsky7]

Re: VX912 with FSP035-1PI01

C662 replaced, still no luck.

On further inspection I found this on the large capacitor (C114), that can't be good.




It's labelled as a 100uF 400v, I've had a look on a component site but there's so many different material types, I'm confused. Would love some advice on a replacement.

Thank you kindly.

[Davi.p]

Re: VX912 with FSP035-1PI01

In the second picture that dried liquid you see is glue, try to detach the cap from board and read the specs on it, it is surely at 400v and maybe a 82 or 100uF, not low esr, 85 degrees will probably be ok.

[Rtech]

Re: VX912 with FSP035-1PI01

If replacing the Big cap does not fix it !!! then on your Image 1 at the top right there is an Inverter transformer and in front of that an Orange/Brown Capacitor..although I cannot be sure from the photos BUT compare the 'thickness' of the cap with the one in front of the other Inverter Transformer and if it looks as if the size is different, then you probably have to replace that AND its transformer, which also may have burnt out,these are common fauklts on this Board.