Y-sus is not functioning how do i test to find problem?
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I'd like to start out by thanking this forum for providing the info to be able to repair my 15 year old CP1500AVRLCD UPS. Here is all the info I gathered during my trouble-shooting and re-capping.
Like clockwork, I've had to replace the SLA batteries every 4 years. It was about that time and the UPS was acting like it needed new batteries... randomly shutting off with AC present, not being able to charge fully, and poor runtime when AC was removed. So, I replaced the batteries but noticed that it was not charging properly.
I decided to verify that the batteries were... -
First of all thanks to all of our members who have posted previously all methods posted here.
Please leave a comment if you find something new,or have anything else to add.
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Find by serial number,model number or series
If you know the laptop serial or model number go to HP support https://support.hp.com/us-en/drivers/laptops .
Enter the serial number or model number and click submit.On the next screen you will have to enter the OS
Operating system and OS version.If... -
Hello Guys,
I'll make it short and quick.
When I have the switch connected to power, the ampmeter shows 0.043 amps at 12V.
The screen doesnât turn on. And there is no sound either.
The battery is at 3.7V.
I have replaced the USB port and it appears to be functioning well so far. I have also tested each pin against each other with a USB test board to check for any shorts.
I didn't find any shorts on the M92 chip. Here are some screenshots of the chips and where I measured ground.
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I have a PS5 that will turn off after anywhere from about 5 to 30 seconds after power-on. It will sometimes make it to Safe Mode, but won't last long there. The following are steps I have taken:
1 - Tested on multiple sources of 12v power including 2 separate bench power supplies. Doesn't fix the issue, which at least to my mind, rules out the power supply as the problem.
2 - Visual inspection of board. Absolutely no signs whatsoever of burns or failed components.
3- Checked for standby voltages. All seem normal.
4 - Added liquid metal and re-spread... -
Hey guys,
Happy to find this awsome forum.
I'm trying to repair a laptop I bought (wasn't mine). I have some experience and equipment but i'm new to laptop repair so I don't know what to test.
There is a picture of the board here (another post)
This is the testing Iv'e done:- When i'm connectng TYPE C I get 19.2V on a capacitor in the middle of the board
- 8.39V on a buck that get's the 19.2V input, apperantly this is the main system voltage since I get it in the input of every buck and on the current sense resistor.
- 3.36V on another buck
- 5.22V on another buck
- Other
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