Electronics > Repair
What more i can do?
222Lab_Test222:
--- Quote from: Harry_22 on November 18, 2024, 02:44:48 pm ---
Regarding Beeper.
Make the same measurement on its signal pin. Next one pin is +5V or GND.
--- End quote ---
1st Image is Non Working
2nd Image is Working.
Next one pin is +5V.
Harry_22:
I expected to see the high level on C2.
Please try to lift leg 11 of the RTC chip on non- working machine.
Let's do the following. Apply flux to the leg and braid for desoldering. Touch the braid to the leg and remove all the solder with the soldering iron. Next slip a blade under the leg and touch the leg with a soldering iron. Don't lift it high, it might come off.
Next look the signal at TP1.
Harry_22:
Try to switch on non-working machine without the battery first.
Control TP1 signal as usual.
222Lab_Test222:
--- Quote from: Harry_22 on November 19, 2024, 01:46:53 am ---Try to switch on non-working machine without the battery first.
Control TP1 signal as usual.
--- End quote ---
Same before battery remove and after remove.
222Lab_Test222:
--- Quote from: Harry_22 on November 19, 2024, 01:40:51 am ---I expected to see the high level on C2.
Please try to lift leg 11 of the RTC chip on non- working machine.
Let's do the following. Apply flux to the leg and braid for desoldering. Touch the braid to the leg and remove all the solder with the soldering iron. Next slip a blade under the leg and touch the leg with a soldering iron. Don't lift it high, it might come off.
Next look the signal at TP1.
--- End quote ---
I do not think it can be done,Why?
Because its old board and too ,much testing has been done in that pins, If i did further and try to desolder i worry it might break down.
BUT i will try if it can be done, Lets Hope.
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