Please help to find subj, thanx!
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Hi All, I have a 9th Gen Dell Optiplex micro PC motherboard which doesn't power on. When I connect the motherboard with power adapter, it goes into safe mode and turns off. So from info I have gathered online, it looks like there is a short circuit on the motherboard. So can you guys help me with figuring out the issue?
I am new to electronics repair, so my queries could be naive but I am ready to learn.
So I have a multimeter and a solder with me. But I can try to get a variable voltage power supply with a thermal camera as well. From what I seen online, best way is... -
Hi
I have a Dell Latitude 5350 Ultra 7 Motherboard I am trying to repair that has a blown chip.
The chip is marked as eHOLH similar to the one I have pictured.
Any ideas what it does and what the pin outs are as 3 tracks have gone and need to find out what / where they went / did etc.
Dell PN of the motherboard is 08DCGW.
Below is the area I am trying to repair:
Does anyone have a picture of this motherboard in this area they could take and upload?
Cheers... -
My question pertains to understanding the control circuity inside a Dell PT434 type battery used in Dell E6400, E6410 and other Dell notebooks?
Does anyone have a circuit diagram for the inside of a Dell PT434 battery and/or a description of how the control lines work to control this battery?
My reason for asking is I have a battery which I cannot get to charge beyond 1% in a Dell E6410 or E6400.
The LED bar graph charge indicator on the battery shows one LED lighted when the info button is pressed.
I have tried multiple different Dell power adapters. My Dell... -
Hi everyone,
Does anyone happen to have the schematic (and if available also: the board view) for the Dell Precision 3650 Tower motherboard please?
Manufacturer: Dell
Model: Precision 3650 Tower
Motherboard markings:- IPRKL-RDT REV: A00
- D33D66
- CN-0NDYHG-PE100-1AM-05SY-A01
- P&Q 2134 CM-4 94V-0 E162264
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Hi, I'm new to laptop repairing, but not new to electronics. I just opened a laptop a friend gave me (no power) , and I was hoping for shorted main power rail , a bad capacitor or a bad dc-in mosfet. Up until now I haven't found a short or something obviously burned, the dc-in mosfets seem to work ok, the + on the big capacitors close to the CPU have an OK resistance to ground (around 14-15ohm) but following this thread here I connected the motherboard to the power brick to check the voltages. I didn´t do a lot of poking around when I noticed that the CPU was rather hot (over 55-60C to the touch)....
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