HP PSC2355 with likely bad caps

[smeezekitty]

So I have this HP PSC2355 printer which I suspect
has bad capacitors. Symptoms are frequent
blue error screen (on the printer screen). Failure to start up usually either
a restart loop, a hang or a blue screen. It seems more likely to successfully
start when it is warm.

Also the screen slightly dims in accordance to the activation of the motors.

I suspect caps but the problem is I cannot figure out how to get
access to the main circuit board. Any ideas?

[stj]

Re: HP PSC2355 with likely bad caps

there are service manuals online for most HP stuff, you just need to search.

[smeezekitty]

Re: HP PSC2355 with likely bad caps

I'm not having any luck on this particular model

[todenkopf]

Re: HP PSC2355 with likely bad caps

There are no manuals for HP inkjets, except A3+ models and few old officejets.
Have you checked PSU unit?

[smeezekitty]

Re: HP PSC2355 with likely bad caps

There are no manuals for HP inkjets, except A3+ models and few old officejets.
Have you checked PSU unit?

Thanks for the reply. I had forgotten about this thread.
I can confirm that the same problem occurs with a different power supply

[Th3_uN1Qu3]

Re: HP PSC2355 with likely bad caps

I'd rather suspect the processor on the printer mainboard in this case. A reflow should (temporarily) fix it.

[smeezekitty]

Re: HP PSC2355 with likely bad caps

I'd rather suspect the processor on the printer mainboard in this case. A reflow should (temporarily) fix it.

Well wouldn't the backlight dimming in rhythm with the motors point
to a fried bypass cap?

Regardless the problem is I cannot get to the board