How to clean a HP 35?



#4

I bought a HP 35 S/N 1302A 81058. The calculator is in good shape but the faceplate needs some cleaning. What is the safest way to clean it? What should I use to do that?

Thanks,

Miguel

Edited: 13 Sept 2007, 6:35 p.m.


#5

My favorite cleaning solution for the keyboard, and the keys too, is any of the blue or green spray-type cleaners, e.g. Fantastik, Formula 409, Windex, etc. Wipe on and off with a soft cloth. In my humble opinion, it is way, way, way easier to do a proper job if you completely disassemble the calculator. If you try to clean the keyboard with the keys in place, it's tough to not end up with a "cross-hatched" pattern from having to go up-and-down and side-to-side between the keys. Also, if you take the keys out, you can soak them in a dish of cleaner to get rid of all of the grunge. (A surprising amount usually comes off!) So, has anyone peeled back your label or poked holes to get at the screws underneath? If so, I say take it apart. If the label is undisturbed, only you can decide if you'd rather have an intact label or a properly cleaned calculator. If you open it up, you can also clean and lubricate the on-off slider switch, which is bound to start acting up sometime.

Here's what everything will look like when you get it apart:

If you need any instructions or further advice on taking it apart, just ask.

Oh of course, perform at your own risk, your mileage may vary, etc.

Edited: 14 Sept 2007, 7:37 a.m.


#6

Thank you Jeff. this is excellent and more complete than I hoped.

Regards,

Miguel


Possibly Related Threads...
Thread Author Replies Views Last Post
  HP-35 blind buy but buggy! Max Stone 7 983 11-11-2013, 05:56 PM
Last Post: Dieter
  Another HP 35 Red Dot on eBay Michael de Estrada 5 771 11-09-2013, 03:07 PM
Last Post: aj04062
  HP 35 ... 80 Olivier De Smet 6 752 08-29-2013, 07:25 AM
Last Post: Olivier De Smet
  HP 35 Pretty Good Purchase Today! Norman Dziedzic 1 349 03-05-2013, 12:52 AM
Last Post: Dan Lewis
  HP41 display clean up Wolfgang 4 371 02-18-2013, 02:13 AM
Last Post: Bruce Larrabee
  Slightly OT: Remember the extraction of the HP-35 ROM? Frank Boehm (Germany) 1 341 02-06-2013, 05:53 PM
Last Post: aurelio
  Silver paint for HP 35 case Anoop Sahal 2 445 12-26-2012, 10:17 AM
Last Post: Anoop Sahal
  HP 35 #3? ClausB 5 556 12-11-2012, 02:48 AM
Last Post: Maximilian Hohmann
  HP 35 Red Dot page Michael Eckstein 6 658 11-05-2012, 03:03 AM
Last Post: Michael Eckstein
  Single Level X^2 for HP-35...Any ideas Matt Agajanian 0 258 08-11-2012, 10:01 PM
Last Post: Matt Agajanian

Forum Jump: