I am trying to determine a source of quality VRM caps for a Gigabyte GA-7VM400M-RZ. The bad caps in question are 3300uF, 6.3VDC 10mm x 25mm electrolytics. All five are leaking and burst on the mainboard. I believe the original caps are KZG by United Chemicon.

Any suggestions?

Re: Repairing VP2030B

I am familiar with Digi-Key. I ended up going with Mouser. Their online catalog is easier to navigate and I don't think there is much difference in total cost once you factor in minimum buys, reel charges, shipping, etc.

Re: Repairing VP2030B

I have decoded the "TP" to mean "time delay, 3A". The 3A makes sense because the inverter is rated at 54W. Since the input voltage is 20VDC, 3A would give 60W maximum power. The SMD fuse measures 3.2mm L x 1.6mm W.

I found this fuse at Mouser:

F1206SB3000V032T

32VDC, 3A Time Delay/Slow Blow



Mouser wants $0.37/EA.

Does this sound like the fuse to get?

Re: Repairing VP2030B

I jumpered around F1 and the monitor powered up like normal.

Now I need to find a replacement F1 SMD fuse....


Thanks for the tip, Wrog!

Re: Repairing VP2030B

I found a single SMD fuse that appears to be blown (open). It is marked "TP", so I assume it a 3.0A piece.

I am going to try to jumper it out just to see if the backlight comes on...

I get a solid green indication when the monitor is turned on and connected to a PC. It will go into sleep mode if no PC is connected.

Re: Repairing VP2030B

My VP2030b appears to have a backlight issue. The screen stays dark when powered on. I suspect I have a bad inverter. I tried to take some voltage readings on the inverter inputs and outputs. The inputs to the inverter read around +20VDC, but I am pretty sure my cheap DMM won't read AC that at the frequency the inverter output runs at (90kHz). My meter reads zero AC volts on the output.

I inspected the caps throughout the various boards, and none seem bulged or leaking. I also read the caps on the inverter (in circuit) and I get around 652uF,...