Re: Navigation display static and screen problems...can this be a bad caps?

Got some pics.

[url]http://www.pixhost.org/show/2027/6269964_p1020346.jpg[/url]
[url]http://www.pixhost.org/show/2027/6269965_p1020352.jpg[/url]
[url]http://www.pixhost.org/show/2027/6269966_p1020347.jpg[/url]
[url]http://www.pixhost.org/show/325/6269971_p1020351.jpg[/url]
[url]http://www.pixhost.org/show/2027/6269968_p1020348.jpg[/url]
[url]http://www.pixhost.org/show/2027/6269970_p1020350.jpg[/url]Re: Navigation display static and sc......can this be...

Re: Navigation display static and screen problems...can this be a bad caps?



It is a bit different from the monitor problem, i just dont under why the screen would look better with time (not perfect).

Unfortunately i can't swap it out and test in another car (got the unit from Ebay).

I guess i should just open it up and see if there are any visibly bad ones, but figured i asked here to see what people thought....

Hey guys. I've been trying to connect a 2002 Toyota Matrix Nav System into a 2008 car. The plugs are different and the diagrams/schematic have 3 wires that dont match. The speaker wires, power and gnd are easy. The wires dont match have to do with LCD Dimmer, LCD (something else, backlight i think), and Illumination. I think i figured out the illumination one.

But the problem is with the display. There are a bunch of static, lines and waves on the screen when you first turn it on. Kind of like a bad tv reception but not exactly. The thing that makes me think it might be cap related...

Re: Samsung 930b LCD cold start problem (inverter?)

Well, i replaced the one closest to the pack. Tested it again, powering up the board without the rest of the monitor connected to it this time. Same hissing sound, now only 2 minutes.

Replaced that last lonely one, didn't bother testing anymore, just re-assembled the monitor. Turn it on, no hissing, monitor works.

Conclusion, listen to the advice here, replace EVERY SINGLE cap on the board and not just the one that looks bad.

Re: Samsung 930b LCD cold start problem (inverter?)

Pics. The only one not replaced is the small black one in the 3rd pic and the 1 in the middle of the 2nd pic by itself. Noone has mentioned replacing that 2nd one.

I ordered both from digikey today, but somehow i dont think the noise will stop after i replace those....

Re: Samsung 930b LCD cold start problem (inverter?)

My frustration continues.

Like an idiot, i was stubborn enough to wait for these free samples, totally not worth it, better off just buying them. I finally got them today, all but 1 cap. Replaced all the caps i had and still the same problem. I seem to be making progress as the hissing noise is on for less then 5 min. when before it would take from 30 to an hour or more. Once the hissing stops the monitor works fine, although i didnt even test it this time.

I've been trying to isolate the noise but it...

Re: Samsung 930b LCD cold start problem (inverter?)




So you would recommend replacing every single cap on the board? Everyone seems to say that the Samxon GF are the faulty ones, i intend to replace all 3 (although only 1 looks bad), but you're saying that i should replace the others as well?

Btw, couldn't wait, tried to replace that 1 clearly bad cap with the generic cap i got from the Electronics store. Screen was completely black with no noise, thought i killed it, but after 10 min. or so it started making the hissing sound again (a lighter...

Re: Samsung 930b LCD cold start problem (inverter?)



Ahhh, yes. I just saw the 1st option for UPS ground being $8 and thought it was the cheapest one. Did not see the $3 option. Thats much better, thanks. Hopefully this goes smooth, i will replace all 3 samxon (but not all the caps on the board)....

Re: Samsung 930b LCD cold start problem (inverter?)

Hey guys, thanks for all the great info, i'm confident i can now fix my monitor. My problem looks to be much like the OPs, except that after about 30 min. after turning it on, the monitor works perfectly fine.

I have a complete newbie question about ESR.

My board looked a bit different then the OP but the same Samxon GF 820uf cap is dying (just 1 visually, i have 3 on my board). The problem is that i'm having trouble finding $a replacement. There are plenty of of places online, but thats gonna take $10-$15...