Question about Printers & Copiers
My first thought is probably what you've already considered as well...the LCD display is old and the functional elements are wearing out. My second thought was that it would probably be cheaper to replace than to repair. Nevertheless, I can try to address your question with a couple of ideas.
There are actually quite a number of "HP Laserjet 4" printers including the Laserjet 4, 4m, 4plus, 4m plus, and so on. Here's the list:
Product Search Results
Here's the webpage for the actual Laserjet 4:
Laserjet 4 Page
You should find a link to the manual for this product on that page. You can also ask a question directly on the HP support forums:
HP Laserjet Support Forums
Those options should give you your best bet on replacing the LCD if the option is reasonable or possible. Good luck.
Posted on Oct 07, 2008
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