Post Reply 
HP Portable Plus LCD
07-26-2016, 02:12 PM
Post: #2
RE: HP Portable Plus LCD
(07-05-2016 10:34 PM)aj04062 Wrote:  Does anyone have experience troubleshooting missing pixel rows on a Portable Plus?
so far I did not have this problem. I guess you have already opened the machine and reseated all ribbon cables? Make sure you are well grounded - there are many sensitive CMOS parts in the display module.

You might also want to read through the Service Manual to see where else a bad connection could be located in the display module (hoping that it is only a contact problem).

I don't know whether there is a flexprint/rubber pressure pad combo involved, maybe immediately at the display - these are well known for losing contact pressure over the years (a typical problem for the HP 48 calculator family).
Find all posts by this user
Quote this message in a reply
Post Reply 

Messages In This Thread
HP Portable Plus LCD - aj04062 - 07-05-2016, 10:34 PM
RE: HP Portable Plus LCD - Martin Hepperle - 07-26-2016 02:12 PM
RE: HP Portable Plus LCD - 4ster - 07-26-2016, 02:58 PM

User(s) browsing this thread: 1 Guest(s)