Authentic HP85 color?


Which is the authentic HP85 plastic color?
I have found pictures in which it looks totally white, others almond and others light beige.
My HP85 is dark-yellow!. I have taken a look behind the cap and the color there looks light beige.

Then which is the true color of HP85?



If my memory serves me well it was clear beige right out of the box...

(It was in 1982 though... :-)

A previous thread also deals with this trouble here.

Cheers and good luck with the colour recovering.



I have used a single product:

I have applied this product alone, no other product mixed with it.

Before testing the product on the whole case, I have tried putting a small drop on some hidden part. Two hours after, the circle under the drop was clear beige!
Then, I have taken appart the HP85, and have covered the upper side with a thick layer of Vanish-Oxi-Action foam. Couple hours later it was clear beige. Not exactly the tone at the bottom side but almost there. It was a little darker. Probably the process could be repeated to clear up the tone even further but it has done a wonderful job! Probably it would work as well in less than 2 hours.


I haven't used this product on a calculator but I can attest that the Vanish soap bar frothed up with a little water makes a good job of removing nicotine stains from the vinyl covering on old radios (and a better job than expensive foam cleaners on the cloth upholstery of car seats).

Possibly Related Threads…
Thread Author Replies Views Last Post
  HP Prime Tip: Changing the Color of a Function Eddie W. Shore 3 1,590 10-02-2013, 04:08 PM
Last Post: Jim Horn
  Color calculators Mic 72 14,372 05-01-2013, 11:36 AM
Last Post: peacecalc
  HP85 tape reader; end of tape detection inaki 9 3,200 04-25-2013, 02:25 PM
Last Post: Paul Berger (Canada)
  HP85 Programmable ROM cardtridge 82929A-service ROM not working- inaki 2 1,880 04-25-2013, 08:08 AM
Last Post: inaki
  HP85 Waveform Analysis inaki 1 1,094 04-23-2013, 01:20 PM
Last Post: Paul Berger (Canada)
  Hp85 PRM-85 board Roe Peterson 2 1,312 12-08-2012, 12:00 PM
Last Post: Roe Peterson
  OMG : NEW Casio calculator with color !! Mic 23 5,392 11-29-2012, 01:27 PM
Last Post: Eddie W. Shore
  New high def picture of new TI-84 Plus Color SE Mic 17 4,838 11-26-2012, 04:17 PM
Last Post: Luiz C. Vieira (Brazil)
  Yet a new TI calculator with color screen ?! Mic 20 5,175 11-24-2012, 12:30 PM
Last Post: Al
  Color Display? Benoit Maag 12 3,274 08-03-2012, 07:23 PM
Last Post: Les Koller

Forum Jump: