Re: Hanns-G HG281D, LCD Monitor no power

I just recapped my power board for the 3rd time. This time I purchased all low ESR panasonic, and nichicon caps that were recommended from this site. And I replaced every cap this time. When I had not low esr nte caps on the board it would give me a blue led and show video for a short time, now with the new caps it's back to doing absolutely nothing, no led, no video, no electronic hum. I am pretty much out of patience at this point, is there anything that I could possibly be missing?
Sorry if I sound rude, just really irritated with...

Re: Hanns-G HG281D, LCD Monitor no power

The panasonic cap is EEUEE2G220, it is an EE series. Its not the main power cap on the board, it is the next largest one.

Thanks for the quick response.
Jason

Re: Hanns-G HG281D, LCD Monitor no power

Today I replaced the rest of the caps on the power supply board I started a while back. Originally I replaced most of the larger caps with NTE brand caps from my job before I knew the ESR rating was important. Now the monitor gives me a blue on led and shows video for a second before it goes black. Before working on it today the monitor displayed no video and had no blue power on led. The NTE caps are still on the board, could the ESR rating be causing the issue?

I also noticed that the new panasonic 400v 22uf seemed to be...

Re: Hanns-G HG281D, LCD Monitor no power

Unfortunately the monitor still does nothing. No blue led, and no video.

Jason

Re: Hanns-G HG281D, LCD Monitor no power

On the IC labeled u601 I got 11.5v out of pin 2, and between 163.2, and 164.2 out of pin 5.
The only pin on the output connectors that has voltage is the 5vsb, it gets 4.97v. Last time I checked the 5vsb I didn't get a reading, but I did find a place on the board where a trace to a capacitor came up. The trace was very short so i was able to just jumper it with solder.
I am going to test the monitor again tonight to see if that trace fixes anything.

Thanks again for any help.
Jason

Re: Hanns-G HG281D, LCD Monitor no power

Good to know about the caps, bought them cheap at my job so its not a big deal if they need to be replaced again. Will have to get back to you about the board readings, I don't have my meter with me right now.

Thanks for all the input

Jason

Re: Hanns-G HG281D, LCD Monitor no power

Unfortunately I don't have too many details about the monitor, it was going to be recycled at my job. When I first looked at the power supply there was no bulging or leaking caps that I could see, but since I found so many repair kits online I decided to give it a shot. All the blue caps are my new ones from nte.

Any input would be appreciated

Jason...

Re: Hanns-G HG281D, LCD Monitor no power

I am having similar trouble with this board, I have already used a cap repair kit. There is no blue led in front, and there is no 5v during standby (with or without the video board).

Any help would be appreciated.