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HP32E Repairing
11-14-2016, 09:50 PM (This post was last modified: 11-14-2016 09:51 PM by ElectroDuende.)
Post: #7
RE: HP32E Repairing
(11-14-2016 03:10 PM)jebem Wrote:  Concerning the LED display, I was curious where it can be repaired.
Assuming the issue is a broken bond wire (as per Kees description), a new thin wire could be soldered to the pcb and then just bent to make contact with the led segment; a small drop of conductive paint would fix it.
Of course this would require a magnifying system.
You know that these led segments can be tested in the usual way with just a multi-meter set to diode testing (I tested my LED display in this way using a Protek 505 which presents 2.9V in open connection).

I'm afraid that mine doesn't seem to be a broken wire. If you look at the detail picture, you will see that half of both vertical top segments ligth. This means that it is the led substrate itself what has been attacked by the corrosive spill of the batteries. Later I removed the plastic lens, and you can see that the base changed colour, and not to a good colour...

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Messages In This Thread
HP32E Repairing - ElectroDuende - 10-11-2015, 11:03 PM
RE: HP32E Repairing - ElectroDuende - 10-12-2015, 02:00 AM
RE: HP32E Repairing - Harald - 10-12-2015, 07:24 AM
RE: HP32E Repairing - jebem - 11-10-2016, 02:18 PM
RE: HP32E Repairing - ElectroDuende - 11-13-2016, 08:51 PM
RE: HP32E Repairing - jebem - 11-14-2016, 03:10 PM
RE: HP32E Repairing - ElectroDuende - 11-14-2016 09:50 PM

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