Post Reply 
HP 46 repair
05-12-2019, 11:16 AM (This post was last modified: 06-30-2019 02:09 PM by AndiGer.)
Post: #29
RE: HP 46 repair
Before I go to clip the capacitor here are some results compared to the working printer in my HP-81:

Printers detached from main board.
HP-81 printer (power) red to (power) black gives 875 Ohms constantly.

HP-46 printer on the first refresh of DMM most of the time gives around 300 Ohms (sometimes also around 200 or around 600 to 800), second refresh gives 1230 Ohms, 3rd refresh 1270/1280 Ohms and then goes up in steps to be stable at 1300 Ohms.

Is it possible to derive the problematic part from that behaviour? Capacitor or diode or transistor?
Find all posts by this user
Quote this message in a reply
Post Reply 


Messages In This Thread
HP 46 repair - Geoff Quickfall - 03-10-2019, 04:20 AM
RE: H 46 repair - Geoff Quickfall - 03-10-2019, 04:23 AM
RE: HP-46 repair - Dieter - 03-10-2019, 03:42 PM
RE: HP 46 repair - Geoff Quickfall - 03-10-2019, 05:21 PM
RE: HP 46 repair - BobVA - 03-10-2019, 05:30 PM
RE: HP 46 repair - Maximilian Hohmann - 03-10-2019, 05:43 PM
RE: HP 46 repair - Geoff Quickfall - 03-10-2019, 07:46 PM
RE: HP 46 repair - BobVA - 04-12-2019, 03:08 PM
RE: HP 46 repair - AndiGer - 04-12-2019, 04:02 PM
RE: HP 46 repair - Geoff Quickfall - 04-12-2019, 05:55 PM
RE: HP 46 repair - AndiGer - 04-12-2019, 07:15 PM
RE: HP 46 repair - AndiGer - 04-15-2019, 08:27 PM
RE: HP 46 repair - teenix - 04-15-2019, 10:45 PM
RE: HP 46 repair - vassilisprevelakis - 05-02-2019, 11:03 PM
RE: HP 46 repair - AndiGer - 04-19-2019, 08:42 PM
RE: HP 46 repair - AndiGer - 04-26-2019, 04:31 PM
RE: HP 46 repair - AndiGer - 04-27-2019, 05:18 PM
RE: HP 46 repair - Geoff Quickfall - 04-27-2019, 07:06 PM
RE: HP 46 repair - AndiGer - 04-28-2019, 10:12 AM
RE: HP 46 repair - Geoff Quickfall - 04-28-2019, 05:43 PM
RE: HP 46 repair - AndiGer - 04-28-2019, 06:11 PM
RE: HP 46 repair - AndiGer - 05-03-2019, 08:54 AM
RE: HP 46 repair - vassilisprevelakis - 05-04-2019, 12:53 AM
RE: HP 46 repair - AndiGer - 05-05-2019, 04:37 PM
RE: HP 46 repair - vassilisprevelakis - 05-15-2019, 10:43 PM
RE: HP 46 repair - Geoff Quickfall - 05-07-2019, 07:26 PM
RE: HP 46 repair - AndiGer - 05-07-2019, 07:40 PM
RE: HP 46 repair - AndiGer - 05-12-2019 11:16 AM
RE: HP 46 repair - Geoff Quickfall - 05-16-2019, 05:56 AM
RE: HP 46 repair - BobVA - 05-16-2019, 09:45 PM
RE: HP 46 printer repair - AndiGer - 05-26-2019, 04:38 PM
RE: HP 46 repair - AndiGer - 04-30-2020, 01:48 PM
RE: HP 46 repair - tsb - 05-16-2020, 03:15 PM
RE: HP 46 repair - AndiGer - 05-16-2020, 08:07 PM



User(s) browsing this thread: