16 Nov
2008
16 Nov
'08
2:06 p.m.
I'm repairing/restoring a HP-65 with severe
oxidation-damage on the
cardreader pcb and a lose headwire.
This head was filled with white siliconkit so I was able to remove it and
That, I think, is the earlier version. I've never tried to dig out the
sealant to repair one.
resolder the wire (yellow one). After resoldering,I
refilled it with 2k
Which, IIRC, is connected to the other end of the winding that the red
wire connects to.
epoxy glue, terminal resistance seems to be allright
for both coils and I'm
now restoring the PCB traces. The head connection explained it self.
If you need any information (pinouts, testpoints, etc), feel free to ask.
-tony