Re: Technika 32-407B starting problems
Already did, but no success. Thanks for your reply.
Already did, but no success. Thanks for your reply.
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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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Hello Team,
I'm back with another backlight issue that I thought was simple, but it turned out to be more complex than expected.
Let me provide a brief history: The TV was working well, then one day, the backlight started and shut down. I thought I had an LED issue leading to this behavior, so I replaced the LEDs with brand new ones. However, the issue remains the same.
Next, I replaced the electrolytic capacitors attached to the LED power supply, but the results were the same. I then replaced the driver, a OB3365RP, and did it twice due to the same result.... -
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... -
Greetings
My old 350W FSP-350GLN(80) PSU was working fine with my current computer for few years(and previously with few other computers as well). Nothing has changed in setup but since last few months I am getting problems while trying to boot PC.
What happens, is that PSU starts and I can hear fans, both PSU, CPU, MOBO and GPU. I can also hear HDD scratching and normal starting sounds. But DVI monitor claims that there is "no signal". Moreover, neither USB mouse nor PS2 keyboard does flash leds like it should do upon boot.
I have to turn PSU switch... -
Hi to all, this laptop came with no signs of life, no battery chargin and no start.
I found that the main 19v rail was almost shorted, it measured around 7 Ohms , then searching better I found a shorted MP86945A DrMOS (between Drain and Source) that converts the 19 volts into the PCH core voltage...
I was going to chuck the towel, but I had a new same DrMOS then decided to solder it in, then I connected the power jack and the system now powers almost on, all the voltages rise but the CPU core and VGFX core.
Externally I only see that keyboard backlight lights up for 2 seconds,...09-29-2025, 08:05 AM
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