inverter H tree driver imbalance in an AC inverter

[eccerr0r]

My cheap crappy 1KW grid tie inverter (GTI) seems to keep blowing IGBTs. When I first got it, it had two failed IGBTs. It used four 60N100's (TO264). I bought 5 from a dubious source (fleabay) and replaced just the two that were dead. The GTI worked for almost two years but recently one of the two that I replaced failed. Since I had three spares, I replaced the dead one. Then a few weeks later it failed again. Weird. Well since I bought dubious China-sourced IGBTs from fleabay it could very well just be a mixture of fakes. I replaced it, but then a day later it failed again! I put in the last...

[hanhanhan]

Hello,
I accidentally erased the EC BIOS on my MSI GP7611ug motherboard (Board Number: MS-17K1).

Could someone please share a known-good EC dump for this board? I need the .bin file to reprogram the chip.

Any help is greatly appreciated. Thanks.

[Ivee]

Hello i have a problem with my lenovo the soldered ram is dead/dying and there is no option to turn the soldered ram off. Does anyone have/can create a bios for me that has that option? Thanks very much. 🙂

[hanhanhan]

Hello,
I accidentally erased the EC BIOS on my MSI GP7611ug motherboard (Board Number: MS-17K1).

Could someone please share a known-good EC dump for this board? I need the .bin file to reprogram the chip.

Any help is greatly appreciated. Thanks....

[OKRPKCOMP]

I have a dell pc with corrupt bios during bios updation
OptiPlex Tower 7010
Service Tag 4M19QY3
board code TD0201 REV A00
D13 Entry Opti Low 222999-1
motherboard fan spins and off after some seconds
backup attached here...

[Amaphilip95]

Acer aspire v3 571g
Mousepad not working, how do I fix it. I'm new to this platform

[fr0n1k]

Hello everyone, recently i have got iMac 820-3478-A with problem: 1 led, no power button reaction. I have started my research, and noticed, that motherboard has PP12V_S0, so it tries to start without botton pressed, but stacks at U7750 gaves no PGOOD signal.
U7750
15 pin - 3.3v
16 pin - zero volts.
18 pin - 4.77v
19, 20 pin - 5.1V
L7710 impendance - 65 ohms
I have swapped U7750, with no result. Any idea what to look at?
If i inject 3.3V in 14 pin of U7750 led 2 appears.

[adelfr2009]

Hi everyone, I’m working on an HP Victus 15 motherboard that previously had a strong short-circuit on 19v line. The laptop now powers on, but system performance is extremely slow and laptop works only on AC adapter
This are Important PIN Voltage Measurements (ISL88739 Charging IC)

1 ACIN 2.08V
2 ACOK 2.94V
3 SDA 3.28V
4 SCLK 3.28V
5 #PROCHOT 0v
10 COMP 0V
11 CCLIM 4.14V
12 FSET 0V
13 BATGONE 0V
16 ACLIM 2.48V
17 NTC 1.60V
18 DCIN 19.51V
20 VDDP 5.15V
21 LGATE 0V
22 PHASE 0V
23 UGATE 0V...

[oussamahasnaoui]

i need working bios for Asus x71SL the laptop work but it freez when enter to bios...