HP Printers

[Tony Duell]

> 
> Jim Isbell wrote:
> > Thanks, it helps in that it tells me where the problem may be...power
> > supply.  But the 20 second off cycle didn't help so now I think its
> > time to chuck 'em.
> 
> For the LaserJet Series II, "50 SERVICE" is likely to be the power
> supply.  It's less likely to be the fusing station.  The power supply
> would be about $30-$70 for a replacement part, which is not that hard
> to replace yourself if you can work a screwdriver.  Webby URLs to

I am suprised at you! The 'AC power supply' is really simple inside, 
there are no custom parts (in fact the only 'chips' are optoisolated). 
There are about 10 discrete transistors on the protection board, that's all.

In other words, this is something you darn well should be repairing, not 
replacing. 

Ditto for the fuser itself. The lamp (if that's what you need) is cheaper 
than the complete assembly. And it doesn't take long to fit it.

-tony