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Seattle HP 48 GX Calculator Repair?
09-06-2014, 09:03 PM
Post: #1
Seattle HP 48 GX Calculator Repair?
My father has a HP 48 GX calculator that needs service and repair.

Can someone please recommend a shop in Seattle, WA?
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09-06-2014, 11:03 PM
Post: #2
RE: Seattle HP 48 GX Calculator Repair?
What are its symptoms?

I could help, but I'm not in Seattle!
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09-07-2014, 12:54 AM (This post was last modified: 09-07-2014 12:56 AM by Mark Hardman.)
Post: #3
RE: Seattle HP 48 GX Calculator Repair?
(09-06-2014 09:03 PM)AF7 Wrote:  My father has a HP 48 GX calculator that needs service and repair.

Can someone please recommend a shop in Seattle, WA?

You might try contacting Bruce at http://www.vintagecalculatorrepair.com. He's in Eugene, Oregon -- which is about as close as you will get to Seattle for this type of specialty.

You might also consider looking on eBay. The HP 48GX frequently sells for a Buy It Now price around US$150.

If your father would consider a similar model, the HP 50G can be purchased from Amazon for under US$80, features an improved display and faster processor (for most situations).

Note: I am not affiliated with any of these sellers. I trade on eBay under the User Id of "LED".

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09-07-2014, 08:05 PM
Post: #4
RE: Seattle HP 48 GX Calculator Repair?
(09-06-2014 11:03 PM)aj04062 Wrote:  What are its symptoms?

I could help, but I'm not in Seattle!

Last buttons on far right side of keyboard (running up and down) work on and off. Sometimes he runs a test and they work fine, then they stop working.

Thanks.
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09-07-2014, 08:06 PM
Post: #5
RE: Seattle HP 48 GX Calculator Repair?
(09-07-2014 12:54 AM)Mark Hardman Wrote:  
(09-06-2014 09:03 PM)AF7 Wrote:  My father has a HP 48 GX calculator that needs service and repair.

Can someone please recommend a shop in Seattle, WA?

You might try contacting Bruce at http://www.vintagecalculatorrepair.com. He's in Eugene, Oregon -- which is about as close as you will get to Seattle for this type of specialty.

You might also consider looking on eBay. The HP 48GX frequently sells for a Buy It Now price around US$150.

If your father would consider a similar model, the HP 50G can be purchased from Amazon for under US$80, features an improved display and faster processor (for most situations).

Note: I am not affiliated with any of these sellers. I trade on eBay under the User Id of "LED".

Thanks for the tip about the HP 50G. If all else fails, I will look into it.
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09-07-2014, 08:18 PM
Post: #6
RE: Seattle HP 48 GX Calculator Repair?
(09-07-2014 08:05 PM)AF7 Wrote:  
(09-06-2014 11:03 PM)aj04062 Wrote:  What are its symptoms?

I could help, but I'm not in Seattle!

Last buttons on far right side of keyboard (running up and down) work on and off. Sometimes he runs a test and they work fine, then they stop working.

Thanks.

That is a pretty easy repair. All you need to do is open up the calculator halves, remove the PCB and reinforce the contact between it and the keyboard.

Contact me via direct contact if you would like me to quote repairing it.
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09-08-2014, 06:46 PM
Post: #7
RE: Seattle HP 48 GX Calculator Repair?
If he doesn't mind doing it himself, the instructions can be found here:

http://users.ju.edu/hduong/repair/

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09-08-2014, 08:36 PM
Post: #8
RE: Seattle HP 48 GX Calculator Repair?
(09-06-2014 11:03 PM)aj04062 Wrote:  What are its symptoms?

I could help, but I'm not in Seattle!

Here is an exact list:

Test for 128 Ram - okay

Test from left to right buttons: all okay, give the test beep, except for--

#29 (arrow left)
#34 (division)
#39 (multiplication)
#44 (subtraction)
#49 (addition)

these buttons do not give the test beep and do not compute.

Thanks.
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09-08-2014, 08:37 PM
Post: #9
RE: Seattle HP 48 GX Calculator Repair?
(09-08-2014 06:46 PM)Han Wrote:  If he doesn't mind doing it himself, the instructions can be found here:

http://users.ju.edu/hduong/repair/

Thanks. I will print this for my Dad to look at.
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09-08-2014, 08:42 PM
Post: #10
RE: Seattle HP 48 GX Calculator Repair?
(09-07-2014 08:18 PM)aj04062 Wrote:  
(09-07-2014 08:05 PM)AF7 Wrote:  Last buttons on far right side of keyboard (running up and down) work on and off. Sometimes he runs a test and they work fine, then they stop working.

Thanks.

That is a pretty easy repair. All you need to do is open up the calculator halves, remove the PCB and reinforce the contact between it and the keyboard.

Contact me via direct contact if you would like me to quote repairing it.

I am coming from Vancouver, B.C. trying to find someone in the Seattle area to repair it. Do you have any contacts that might know on a good repair shop there?

Thanks.
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09-08-2014, 08:54 PM
Post: #11
RE: Seattle HP 48 GX Calculator Repair?
The best tool I have found to separate the halves has been a well rounded, wide spade. Believe it or not, a nail clipper has worked for dozens of these repairs for me.
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09-08-2014, 08:56 PM
Post: #12
RE: Seattle HP 48 GX Calculator Repair?
(09-08-2014 08:42 PM)AF7 Wrote:  
(09-07-2014 08:18 PM)aj04062 Wrote:  That is a pretty easy repair. All you need to do is open up the calculator halves, remove the PCB and reinforce the contact between it and the keyboard.

Contact me via direct contact if you would like me to quote repairing it.

I am coming from Vancouver, B.C. trying to find someone in the Seattle area to repair it. Do you have any contacts that might know on a good repair shop there?

Thanks.

I don't know anyone.
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09-08-2014, 10:44 PM
Post: #13
RE: Seattle HP 48 GX Calculator Repair?
I am in Vancouver!

let me know via this thread if you want me to look at it and repair. AJ is correct, a relatively easy repair.

I am in white rock, check your pm at this site.

Geoff
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