Hi all,
I’m trying to recover a Lenovo Yoga Slim 7-14ARE05 with board DA0LS3MBAF0 Rev:F. I’ve run into an unusual issue where USB-C PD is stuck at 4.7–5V and the system won’t boot (keyboard lights flash briefly, then nothing).
🔥 The Problem Started After Suspected ESD/PD Fault
I experienced a power issue or ESD event through a USB-C charger
After that, the NX20P5090 power switch was visibly burned and was replaced
Now the PD controller always negotiates 5V @ 2A, even with known-good chargers
🧠 What I’ve Done So Far
Flashed...

Hello, I'm stuck in troubleshooting…
The flash system works like that : when the (mechanic) flash button is pressed, the flash mecanically pop up, and a circuit buck boost elevate 7v (batt) to 200-300v (?) for charging the big capacitor. And when the photo shoot button is pressed, the capacitor is discharged in the xeon light.

In the D800, there is a first « power board » close to the battery. 2 wires (batt 7v) goes to another little « flash board ». I measured 7v, so ok.
When I press the flash button, it's detected by the system, flash icon appear on LDC display....

Hello,
i want to repair an Onkyo TX-NR809 receiver.

symptoms:
on power on, display appears and i hear one click. enue functions is given.
- no hdmi output
- audio output not tested, but i think it is not there
- usb sticks are not recognized

if i read out the chips with display+standby button + tone+
both dts show only ????

chip is D830K013BZKB4

things i have done:
- reflow of the dts chip without taking off and reballing
- changed the aluminium caps without the big one with 25v because i dont...

I'm using Xiaomi Router 4A gigabit edition as wireless repeater. It worked fine for 2 years or so, but last week, wireless started to disappear.

When I unplug/replug the power, it was working fine for a day/half a day or so until it freezes again.

After testing with different power supply adapters and concluding it wasn't the issue I finally opened the case and this was the situation:



Anyway I proceed to clean up the mess and replace all caps but unfortunately it made the situation worse. Now router can't even boot, either it freezes during...

Hi,

I've got a Toshiba 32L2963DG (10124529) for repair and I'd like to share some info that I gathered so far. I don't usually repair TV's, so I'm exploring this new field. The TV randomly restarts while playing DVB-T2 or stops responding to remote control. It was connected to a wifi but internet apps were never used. Backlight LEDs were replaced in past by me. All voltages are stable, capacitors look fine.

The main board is Vestel 17MB211S with Novatek SoC (ARMv7), TC58NVG2S0HTA00 NAND memory (4Gbit) and 25Q16JVSIQ SPI memory (16Mbit). I started the diagnosis by connecting...