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Help with HP-67 Fault please!
06-18-2014, 04:15 PM
Post: #1
Help with HP-67 Fault please!
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
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06-18-2014, 04:17 PM (This post was last modified: 06-18-2014 04:18 PM by HP67.)
Post: #2
RE: Help with HP-67 Fault please!
It's absolutely useless. Send it to me immediately.

In all seriousness, I'm sure someone will be able to help you fix it.

It ain't OVER 'till it's 2 PICK
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06-18-2014, 04:28 PM
Post: #3
RE: Help with HP-67 Fault please!
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!
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06-18-2014, 04:38 PM
Post: #4
RE: Help with HP-67 Fault please!
One of the best HPs ever made!

It ain't OVER 'till it's 2 PICK
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06-18-2014, 06:25 PM
Post: #5
RE: Help with HP-67 Fault please!
    Card reader rebuilt and keys all working again! Wonderful machine way ahead of its time.
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06-18-2014, 08:45 PM
Post: #6
RE: Help with HP-67 Fault please!
(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.
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06-18-2014, 11:19 PM
Post: #7
RE: Help with HP-67 Fault please!
(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!

Thanks
~~~~8< Art >8~~~~

PS: Please post more 50G stuff :)
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06-19-2014, 06:26 AM
Post: #8
RE: Help with HP-67 Fault please!
(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.

It ain't OVER 'till it's 2 PICK
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