jcellegood
Member
I am in the process of cleaning up battery damage on my Frenzy's ZPU-1001 board. It had very moderate battery corrosion so I have removed the battery and cleaned up the corrosion. I used a vinegar solution, toothbrush and some elbow grease then followed up with an alcohol rinse. (see pics) From what I can tell, there is still continuity between the pads and the immediate elements in the circuit (R30 and GND, respectively) so I think it was caught in time before any real damage was done.
Needless to say when I put the board back in it did not work but instead showed a garbage screen (it worked before, but did not save high scores). No test beeps and the red led stays on solid. The manual says one of the possible causes is the power on reset circuit is now failing. Do I need to put a new battery back in the circuit (say a CR battery holder off the board) in order for this circuit to work? Is that likely what is preventing the board from completing it's tests?
I realize this might be an obvious/dumb question but it's been about 20 years since that one electronics course I took in college and this is my first real board repair. I want to ask before I donkey things up more than they are.
Thanks in advance for your help.
Needless to say when I put the board back in it did not work but instead showed a garbage screen (it worked before, but did not save high scores). No test beeps and the red led stays on solid. The manual says one of the possible causes is the power on reset circuit is now failing. Do I need to put a new battery back in the circuit (say a CR battery holder off the board) in order for this circuit to work? Is that likely what is preventing the board from completing it's tests?
I realize this might be an obvious/dumb question but it's been about 20 years since that one electronics course I took in college and this is my first real board repair. I want to ask before I donkey things up more than they are.
Thanks in advance for your help.
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