Got an old DV6700 with the infamous 67M-A2. It starts, all the lights come on, and the fan spins for a little over 2 seconds. Shuts down, and then the cycle starts over again in an endless loop. Heat the chip or is maybe the bios a mess? Board is the DA0AT1MB8H0 rev. H
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Re: Hp dv6700
Common problem is BGA Nvidia G86-730-A2 -
Re: Hp dv6700
Probably the gpu. You can try pressing on it or overheating it to see if it will turn on. If it does do a rework and you should be good to go.Keyboard not detected, press F1 to continue...Comment
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Re: Hp dv6700
I have never seen BIOS issues on dv6000. It's always the darn nvidia chips.A working TV? How boring!Originally posted by PeteS in CAComment
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I have a really weird problem, this motherboard was working normally, someday it just started and all fans were running but didn't want to post, tried resetting bios, checking CPU and it was getting warm tried external gpu, flashed bios with programmer, but same problem.
Next day after several attempts the board goes into protection mode, no more staying on, I turn on the PSU fans starts directly turning, it used to not start until I press the pwr button, now it starts directly and fans spins, and shuts off after 3 seconds sometimes less, then won't start again unless I unplug the PSU and... -
Hello everyone. I have been reading this forum for a long time - I really appreciate the amount of very interesting materials and information in the field of electronics.
I have a problem with this configuration:
ASUS PRIME B450M-A
RYZEN 1300X (I replaced it with ATHLON 200GE - the same behavior, the processors are functional, tested on another board)
When the entire set is installed (CPU, RAM, ATX connector and 12V 8 pin CPU plug), the board starts up for a while (about 1-2 seconds), the CPU fan starts and the board turns off immediately. When I disconnect... -
Lenovo E15 Gen.3 NM-D481 No starting and charging via USB-C, The device starts only via the battery.I have a Lenovo E15 Gen.3, motherboard NM-D481 with a defective USB-C port. The device starts with battery. When connected to the USB-C power supply, it does not start or charge. 20V is present at the input of the UT5 (High voltage USB PD power switch), 0V at the output
UT5 pin 3 (SNK_PS_EN) =0V
RPT3 Pin1+2 LDO 3V3 present
I suspect that the UT2 USB-C power controller is defective because the UT5 is only controlled by the UT2. However, the UT2 supplies on pin 33 (+LDO_3V3) which makes me wonder if it is defective after all. Unfortunately I don't have it here to test it.
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Hi, I bought 6420 XFR that tries to boot but shuts down after about 3 seconds, CPU gets warm, fan starts.
So far I have tested all rails wich are good, BIOS flashed with CH341, 3.3,5, main rail present. multiple ram sticks tested. Sometimes it might stay on for longer like 4-5 seconds but not always, theres no picture whatsoever. Also on some rare occasions the caps lock flashes 1 time by itself.
NOTE: I am using bench power supply not dell charger with ID pin and NO battery present, kinda doubtful this would cause this issue.
Any help is welcome. Thanks !07-29-2025, 03:53 PM -
Hello Forum team
Have this TV; searched for the model and could not anything so thought I would share in here
Had an issue, some years ago, and looks like some placed sticky tape over some of the lines on the FFC cables between the T con and the mainboard
Anyway, the owner, who gave me the TV, says it starts to blink after a few hours
So I removed the covers, and could not see anything visibly
Removed the power supply and thought some of the solder joints, on the hot side, were not the best. I thought some looked like they were cracked.
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