Post Reply 
HP85A Power Issues
03-10-2017, 01:00 AM
Post: #5
RE: HP85A Power Issues
If power supply board fuse F1 blows (located between the collector of Q2 and R3), possibly due to either a short or being powered on with no connection of the ribbon cables to the logic board, it results in bad voltages.
Find all posts by this user
Quote this message in a reply
Post Reply 


Messages In This Thread
HP85A Power Issues - Paul Dale - 03-08-2017, 09:02 AM
RE: HP85A Power Issues - cruff - 03-09-2017, 04:36 AM
RE: HP85A Power Issues - Paul Dale - 03-09-2017, 04:45 AM
RE: HP85A Power Issues - cruff - 03-10-2017 01:00 AM



User(s) browsing this thread: 1 Guest(s)