Chris

asked Jan 22, 2001 at 8:48pm
Hp HP LaserJet IIIP+

Power on HP IIIP

Hello,
I just started having a problem on my HP IIIP where I turn it on, and within a couple seconds it powers off. It starts warming up and then the LCD display, all LEDs, etc. turn off. I've read abouf other people having this problem on this site, but haven't seen a solution. I would guess it's a thermal problem, but I dunno. Thanks.

Chris
At a guess (albeit an educated guess), I'd suspect something has started to fail in the power supply... as it's a combined AC/DC power supply, I'd definitely suspect it...

Cheers,
Stuart Elflett
Easy Parts
by Stuart Elflett on Jan 22, 2001 at 10:00pm Add comment
There's thermal protection in the fuser, but that would give you a 50 error, not shut the machine down... there's probably a circuit breaker in the power supply, but I don't have one to check so I can't guarantee that one...

The HP LaserJet Quick Reference guide shows a 110V DC Power Supply & a 220V DC Power Supply - normally if there are separate AC & DC supplies they are listed in there, so I'm pretty sure that there is just the one supply (bear in mind that it's an awfully long time since I did anything serious with a IIP/IIIP - these days it's just the common, cheap problems that my customers are fixing - whole printers are available so cheaply that it just doesn't pay to have major things repaired...)

A faulty power supply is simply the most logical reason that your machine would start, and then stop during POST - just about everything else that I can think of off hand would give you an error code, not shut the machine down...

Cheers,
Stuart Elflett
Easy Parts
by Chris on Jan 22, 2001 at 10:13pm Add comment
Thanks for the info. I found out that my school's IT department may have an old IIIP around that I can grab, so I might either get a working printer or something I can get parts from. Thanks.
by Chris on Jan 23, 2001 at 4:35pm Add comment