Electronics > Repair

NOCO GB70 repair help

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AN86:
You were right, i have ghost charge effect,it charge all night on that round charger from cigaret lighter plug and nothing, but when i put it on USB it charge on 100% and green light is on.  After i connect it to car battery, charge % leds starts to flash from 25-100% but nothing happen. I guess i have to hear some relay. Those 2 big ones on negative terminal if i remamber right.

eurgenca:
Check pin 26 of CPU (from memory, will confirm tomorrow) resistance to GND and write it down.

eurgenca:
No sorry pin 27.

AN86:
I measure it and take a picture, not sure if that ok or not but i guess its not.  :-DD :-DD
I mark arrow where did i measure, just in case i did miss PIN 27.

eurgenca:
Well, this is the end, my friend.
Your CPU is busted. You will confirm that by lifting this pin, and if resistance is still low on CPU pin, then...
Here is a chance to invite other members. I don't ovn holtek programmer if someone have we can try to read content if not locked.

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