HP-65 Card Reader "Gummy Wheel Problem"



#8

I have a beautiful old HP-65, which I think has the gummy wheel problem I've heard about. It struggles to pull the card through the reader (the card sticks and the motor runs) and a sticky deposit is left on the top edge of the card.

Is the repair scheme for the HP-65 card reader problem the same as the one shown for the HP-67 or is it different?
I'm worried about having a go myself and getting into a mess by removing the wrong screws etc.

Can anyone help with information please?

Alternatively, is there a reputable repairer of HP-65s anyone can personally recommend? I live in the U.K.

Carl


#9

The instructions for the HP-67 also apply to the HP-65.

Cheers, and good luck,
Victor


#10

Be careful with the HP-65 repair. The wires leading to the card reader are very fragile, and are soldered directly to the circuit board (as they are on some 67's). I'd make sure to record the location for each color. Good luck,
Michael


#11

Also be careful with the same wires at the head end as well. They used a soft silicone potting compound on the 65 heads, the wires can break off inside the head if twisted too much. They can be repaired but it is a miserable job.

Later heads used a hard potting material and they are a bit more robust.

Edited: 17 Feb 2004, 12:30 a.m.


#12

Would you recommend desoldering the head before proceeding with the repair, then? That way excessive twisting of the wires could be avoided...

Cheers, Victor


#13

No, leave the wires be. They are a real pain to desolder/solder and you would be moving them around even more than just fixing the roller.


#14

Many thanks to Victor, Michael, Randy & David for your advice.

Carl


Possibly Related Threads...
Thread Author Replies Views Last Post
  Reasonable price for a 41C, Quad Mem, Time, Navigation and Card reader module? Eelco Rouw 10 1,089 12-12-2013, 01:52 AM
Last Post: Eelco Rouw
  hp-67 card reader problem. Marcel Samek 5 659 12-09-2013, 09:09 PM
Last Post: Paul Berger (Canada)
  HP-65 short circuit Ignacio Sánchez 2 381 10-22-2013, 08:27 AM
Last Post: Ignacio Sánchez Reig
  HP-65 Video Tapes - Anyone have a Copy? Bill (Smithville, NJ) 3 508 10-09-2013, 07:40 PM
Last Post: Paul Berger (Canada)
  Using your HP-65 as a clock! Don Shepherd 24 1,545 10-08-2013, 11:53 AM
Last Post: Don Shepherd
  HP-97 card reader pinch roller axle davorin 2 421 09-15-2013, 08:47 AM
Last Post: aj04062
  HP-97 Card Reader davorin 3 433 09-13-2013, 04:21 PM
Last Post: Stephan Matthys
  HP-65 to kill... Benoit Maag 11 858 08-15-2013, 08:18 PM
Last Post: Jake Schwartz
  HP-67 Card Reader Repair Question aj04062 1 358 08-08-2013, 11:15 AM
Last Post: Randy
  Hp-67 card reader: tantalum capacitor identification Ignacio Sánchez 8 847 06-02-2013, 07:26 PM
Last Post: aj04062

Forum Jump: