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+--- Thread: Help with HP-67 Fault please! (/thread-1657.html)
Help with HP-67 Fault please! - Max Stone - 06-18-2014 04:15 PM
Hi guys, the top row of my HP-67 is unresponsive, completely fails to register in any way. So suspecting a faulty contact I stripped the unit but I cannot trace any dry joints, bad spot welds or track breaks. The horizontal track for the top row leads through to the back of the board just above the A key, and this link is good and the IC leg it leads to is also good. I'm no electronics expert so this is about as much as I can check. The rest of the calc works perfectly...
So before I donate this unit for recycling, does any one have a suggestion on what I could be missing, or is this terminal?
Thanks in advance,
Max
RE: Help with HP-67 Fault please! - HP67 - 06-18-2014 04:17 PM
It's absolutely useless. Send it to me immediately.
In all seriousness, I'm sure someone will be able to help you fix it.
RE: Help with HP-67 Fault please! - Max Stone - 06-18-2014 04:28 PM
mmm, may just want to hang onto this one...:-)
Back together and guess what...rolldown and x><x working with firm press. Started to 'exercise' the other keys and they are all beginning to work, so it appears to be just a case of dirt/lack of use. Just 1/x stubbornly refusing to register, so back in I go and I'll try to get under the contacts to clean.
Thanks again - hopefully all sorted on this 40 year old marvel. Like the doctor says - exercise twice a week!
RE: Help with HP-67 Fault please! - HP67 - 06-18-2014 04:38 PM
One of the best HPs ever made!
RE: Help with HP-67 Fault please! - Max Stone - 06-18-2014 06:25 PM
[attachment=835]Card reader rebuilt and keys all working again! Wonderful machine way ahead of its time.
RE: Help with HP-67 Fault please! - Mike Morrow - 06-18-2014 08:45 PM
(06-18-2014 06:25 PM)Max Stone Wrote: Card reader rebuilt and keys all working again! Wonderful machine way ahead of its time.
Mine has been out to a list member for five years for card reader repair, along with an HP-19C. I'm hoping to get it back someday soon...real soon I hope. :-( It was my first HP, purchased for $450 in 1977.
RE: Help with HP-67 Fault please! - CosmicTruth - 06-18-2014 11:19 PM
(06-18-2014 06:25 PM)Max Stone Wrote: Card reader rebuilt and keys all working again! Wonderful machine way ahead of its time.Built with stolen alien technology!
RE: Help with HP-67 Fault please! - HP67 - 06-19-2014 06:26 AM
(06-18-2014 08:45 PM)Mike Morrow Wrote: Mine has been out to a list member for five years for card reader repair, along with an HP-19C.
Yow! Maybe it's time to post some info on the forums so perhaps social pressure will compel him to return your belongings.
(06-18-2014 08:45 PM)Mike Morrow Wrote: It was my first HP, purchased for $450 in 1977.
I paid the same price for mine in 1981.