Re: Repairing VP2030B
Thanks guys, another vp2030b saved from the dumpster!
Thanks guys, another vp2030b saved from the dumpster!
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Re: Repairing VP2030B
Is it appropriate to continue this thread for additional repair tips on VP2030B or should I start new?
I recently had a V2030B take a dump.
When powered on it makes a sizzling noise coming from the inverter area.
Noise and screen come on for a few seconds, then black and quiet.
I could post an audio file in case the noise may say a thousand words to someone here.
I can repeat the process by just powering the monitor off and on on the front bezel.
The 3 x 180 caps looked good, in fact all caps do.
I've already replaced the 2 x 330 caps at the ribbon cable as they've been common culprits before.
-MWComment
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Re: Repairing VP2030B
You should power the board in the dark and see if there are sparks in the area of the ccfl lamp connectors. If there aren't on the board probably the lamps themself are bad.Comment
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Re: Repairing VP2030B
I didnt see sparks on the inverter area, was trying this without the inverter emi shield.
So is this symptom less indicative of caps due to the sizzle sound?
Ive not seen anyone talk of replacing the lamps on these.
I have three of these monitors, ill swap inverters and see if the problem follows inverter.
-MWComment
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Re: Repairing VP2030B
It's also possible for the sparking to be near where the cable is attached to CCFL tube. I had a monitor fail like that. It functioned normally, otherwise (I could see my PC's desktop/background image with a flashlight and the monitor turned On and Off as it should.
Maybe.
We don't know that yet, unless you replaced all of the caps on the PSU (save for the big high-voltage cap on the primary, which typically does not go bad and does not need replacement).
That would be the best thing to do, indeed. If another inverter board does the same thing in this monitor, then it's probably a lamp issue. Of course, also test the reverse to confirm the issue: the inverter/PSU from this monitor in another known working monitor. If it powers on and works fine, then it's definitely a CCFL lamp issue (likely arcing over somewhere).Comment
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Re: Repairing VP2030B
I will not be surprised if it has bad wiring.
https://www.badcaps.net/forum/showpo...3&postcount=84
Can you smell Ozone too?Last edited by budm; 02-18-2018, 06:49 PM.Never stop learning
Basic LCD TV and Monitor troubleshooting guides.
http://www.badcaps.net/forum/showthr...956#post305956
Voltage Regulator (LDO) testing:
http://www.badcaps.net/forum/showthr...999#post300999
Inverter testing using old CFL:
http://www.badcaps.net/forum/showthr...er+testing+cfl
Tear down pictures : Hit the ">" Show Albums and stories" on the left side
http://s807.photobucket.com/user/budm/library/
TV Factory reset codes listing:
http://www.badcaps.net/forum/showthread.php?t=24809Comment
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Re: Repairing VP2030B
The problem went away once i swapped in one of the other inverters.
I had already replaced the 3 x 180uf caps in it.
I'm not sure how much troubleshooting i can do on the remaining inverter components.
Ill look at the psu caps next and can do other side by side measurements with the good monitor unit when times available.
I don't smell anything obvious.
MWComment
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I know I've been a little scarce lately (like the last 2-3 years), but I'm still here and still doing my thing with fixing PSUs.
For today's considerations, I have a Seasonic B12 BC-550 [A551bcafh] 550 Watt ATX power supply for you (click on links for full size images).
https://www.badcaps.net/filedata/fetch?id=3591771
https://www.badcaps.net/filedata/fetch?id=3591772
It's a modern ATX unit with fixed (non-modular) cables and an 80-plus bronze certificate. Here's the label:
https://www.badcaps.net/filedata/fetch?id=359177... -
Hello!
I have two projects on my work bench. One is a friends dead JBL Xtreme speaker with a blown voltage regulator and corresponding bulged and shorted cap. That cap has clear markings so I know what replacement I need for it.
The other project however is a whole different deal. It's a Zoom 9000 guitar effect from the 90th that has developed a devil hound howl when there is no input from the guitar. I'm guessing caps problem. So, since I don't really use this effect anymore I thought it would be a perfect project to learn on.
I have studied the board and... -
I'm trying to repair two old VCRs, they both have bad caps. One has leaky ones, the other would barely run until I subbed in some caps from another power supply I had laying around (though they are the wrong values). This vcr works for an hour or two, but then the power supply starts whining and the picture gets lines in it. I didn't replace all the secondary caps, so another voltage might still be problematic, or the values I used are too far off.
I've been on mouser and digikey but the options are a bit overwhelming. I just need some new ones that will work. They don't need to be top quality,... -
Good evening
I recently aquired a rev 1.1 Gigabyte 60XT, and was suprised of the amount of leaking caps for a motherboard of the P3 era. Especially the way the 330µf caps seems like the housing discolored even.
Now, there are some 3300µF 6.3V KZG series around the CPU. Would it be OK to replace them with something like EEUFR1A332 ? (Panasonic FR 3300µF 10V). Or was this board designed around very low ESR caps?
But I was also suprised about the bigger boys, which are 330µF 25V.
Could it be they used 25V caps because they were cheaper / available at that time?... -
I did it again – I had to fulfill my inner desire to fix yet another old piece of hardware. This one is actually kind of worthwhile, too – it’s an EVGA e-GeForce 7600 GS AGP video card, model P/N: 256-A8-N542-T2. With the popularity of “retro” PCs from the Win9x to XP era going up, and the diminishing supply of decent AGP cards, it is expected their prices will go up. Or is it? I bought the this video card rather on the cheap side (~$9 USD shipped to my door), because the eBay seller listed it for parts or repair (and correctly noted the bad capacitors.)
So, here is the...
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