Posted By
Flaviosr
on 2021-04-11
07:38:06
|  Re: Plus/4 issues trying to solve with Diag264
Before writing again I have studied a bit to avoid ignorant sentences...
I have bought an unwelding station to be able to unmount the rectifier and it does work.
I have noticed that the voltage between pin 4 of the 7406 and the transistor does not change when it does between pin 3 of the 7406 and the CPU... so that the CPU is not able to control the transistor the right way.
Could it be that the 7406 is "dead"? What do you think?
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