I desoldered U818. It cannot be done without damaging the plate. It is a very difficult chip to desolder because it has an additional contact to...
Which chip do you think should be desoldered first? U818-U807-U819? After desoldering which points on the motherboard should be measured?
I measured capacitors and resistors around U818, U807, U809. Measurement of suspicious capacitors and resistors: C8233 - 0.006kΩ - GND C8(3 or 5)4...
Capacitors seem ok. I didn't measure resistors. Perhaps, possibly, suggest which resistors to check first after analyzing IC measurements. Are...
Is that the point? :) U809 (1v) pin, the coil L803 = top pin 4.48MΩ; bottom pin 0.010kΩ U804 (1.5v) pin, the coil L811 = top pin 26.2kΩ; bottom...
I do not understand. I do not know what to do...
What to do after desoldering the coils? What to measure?
After desoldering the L803, L811, L802 coils, do the same current measurement as before?
I can't desolder these coils ... They don't react to temperature. Hot air soldering iron will not help here either. Too many items next to it.
After removing the coils, do the IC measurement again as last? Do you have the parameters of such a coil somewhere?
U809 (1v) pin 7 or 8 ohms value = GND !!! - 7-8 pin = 0.010kΩ U818 (1v) pin 6 ohms value = 0.458kΩ U807 (2.5v) pin 6 ohms value...
You mistook U810 with U818. I think there is a bug. I marked this in the picture in the post above. The U810 has no 6 pins and is at the very...
I don't know if I understood correctly. Do I measure all ICs or just one? Which IC are you most interested in?
I've been wondering about that too. I took measurements in two different Solo2s. Both measurement results are identical. In fact, if you remove...
I did IC measurements. Unfortunately, I worsened the condition of the motherboard again. I rested my hand on the card reader pins again. I...
You wrote that you don't have a front panel, so I did a voltage measurement on the Solo2's active front panel. The tensions are a little...
I was wondering. Some points on the display glow brighter and some are darker. Logically, when analyzing it, there should be a defective...
I was successful with the Solo2 power supply. There is power after replacing the voltage regulator. Thanks Johnny again. Returning to the dimmed...
According to the theory that maybe the RS232 port is blocking the FPGA upgrade, I replaced the RS232 with the second Solo2. No effect. Does not...
I don't really remember which pins in U824 shorted. They were definitely adjacent pins. The options are 3. I am so reminded that I could have...
