Question about HP LaserJet 4L Printer

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All lights on 4L went off and will not come back on. Power is connected

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  • 78 Answers

This is an old, but well-built printer. First, try to move the printer to a different location, and use a different power cord. If you don't have a spare, power off your computer tower, and use that power cord as it is the same. Be sure you feel a "click" when you depress the power button. If you don't, open the side panel and manually actuate the switch. If this doesn't work, it wil be a power supply replacement, which can be done fairly cheap if so desired, but the rest of the parts in the printer will be old, and there is no telling how much longer they will last.

Posted on Sep 29, 2010


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1 Answer

When I unplugged and moved the printer and then plugged it back the lights did not come back on and will not print. Is there a simple fix

just u need to see the power cable which is connected to the printer that's why if it would be off so how can it give print


Nov 03, 2009 | HP LaserJet 4L Printer

1 Answer

I connected the power cord and I get no lights. The printer does not power up

more than likely your printer power supply has gone bad. if you have had this printer as long as i have, it doesn't owe you anything.

Aug 02, 2009 | HP LaserJet 4L Printer

3 Answers

How to reset Service 4wheel drive warning light on 2005 ChevTahoe

I have a 2005 Tahoe that recently had a similar problem. To resolve, I did the following.
  1. Change the transfer case fluid (Which you already did)
  2. Change Gears to 4L while in neutral, change back to drive, and drive slowly 50 yards or so.
  3. Change Gears to 4H while in neutral, change back to drive, and drive slowly 50 yards or so.
  4. Change Gears to 2H while in neutral, change back to drive, and drive normally for a couple of miles.
This will cycle the fluid within your transfer case, and hopefully clean out the sensor. I did this, and my Service 4WD light went away after one day of normal driving. Hope this helps. Note: When I went into 4L the first go around, it had a hard time shifting due to non use. I changed between 4H and 4L a few times until it got smoother.

Mar 23, 2009 | 2005 Chevrolet Tahoe

1 Answer

Hp laser jet 4L problem

try holding the "online" button down when turning on the printer release when you get "cold reset" message

Jun 26, 2008 | HP LaserJet 4 plus Printer

1 Answer


Dear pamswab.

there is an interrnal fuse in the printer you most open it and found the power bourd the fuse there

Jun 26, 2008 | HP LaserJet 4 plus Printer

1 Answer

4L has died?

time to give it a decent on those old 4L's are mostly drawn from others that are no longer functioning..

maybe you ought to have an HP wake, and a decent burial?

at any rate..that sounds like a power supply board went zonko..

Mar 21, 2008 | HP LaserJet 4L Printer

4 Answers

No power lights

I had the same problem and here is how I fixed it. Well, it's not really fixed but I circumvented the problem. I had my 4L unplugged for months because I was using an Okidata for a while. When I plugged in the 4L it wouldn't power up anymore. It worked when I put it storage, but not now. I tried plugging it in and out so much I got to the point where I was going to toss it. No help on line, nothing in the manuals. AHhhhh!
Then on a hunch I tried this...
I plugged the thing in and let it sit for hours. Then I unplugged it. After some time (hours) I plugged it back in and let it sit for hours. Then unplugged again for hours. Then plugged back in and I saw all the lights flash for a brief moment, but then they all went off. I just kept repeating this (it will take at least a whole day or more), and eventually when I plugged it back in it came to life. At this point DON'T UNPLUG IT!
Now...I was able to duplicate this fix because I recently moved and the thing was unplugged again for a few days. Plugged it back in at my new house and guess what, yea..same problem, but I went through the same procedure and it worked again.
Now it will not be unplugged.

Mar 18, 2008 | HP LaserJet 4L Printer

1 Answer

Paper jam blinking

Try and push the blue button after clearing the jam.

Dec 08, 2007 | HP LaserJet 4L Printer

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