Clean/Repair 42S?



#2

I have a significant amount of dust on the inside of the dispay. Is there a way to open up the calculator and clean it? Or do I just have to live with it?

Thanks,
Wayne


#3

Hi,

I have never tried it but it COULD be possible to use compressed air (for example in cans). The air could be blowed in the calculator through the infrared port ...

Perhaps its worth a try ?

Andreas


#4

Hi Andreas, I really won't recommend the method you described. I tried it with an HP41CX, and I ended up with more dust particles than I had originally when using compressed air.


#5

I have used the canned air technique quite a bit with great success.

If you are REALLY desparate you can try imersing the display end of the calculator in an ultasonic cleaner. I would then recommend at least three rinses in distilled water. Use some Kodak PhotoFlo wetting agent in the last rinse to prevent streaking when it dries (dry overnight in an oven on LOW heat... say 125 deg F) I have used this technique on some machines that were flooded in mud. Worked really well for me but it does risk damaging the machine).


Possibly Related Threads...
Thread Author Replies Views Last Post
  HP-42S repair of unresponsive keyboard Tom Grydeland 1 391 10-08-2013, 07:04 PM
Last Post: aj04062
  HP41 display clean up Wolfgang 4 490 02-18-2013, 02:13 AM
Last Post: Bruce Larrabee
  42s repair.. uhmgawa 1 342 10-10-2011, 12:52 PM
Last Post: Jaime Morales
  42s questions and 42s vs 35s snaggs 13 1,834 09-19-2011, 02:44 AM
Last Post: snaggs
  HP-42S Repair and Color Match aj04062 0 245 03-28-2011, 07:10 PM
Last Post: aj04062
  How should I clean my hp-15c JJDietrich 3 462 12-08-2010, 11:05 AM
Last Post: Martin Pinckney
  How to clean a 20B ? Karl-Ludwig Butte 4 557 12-07-2010, 10:38 AM
Last Post: Martin Pinckney
  A useful HP-50G program to keep the DIRs clean... Bill Zimmerly 4 504 11-13-2009, 12:17 AM
Last Post: Bill Zimmerly
  How to clean the buttons on HP 48G? Denizen 2 414 01-15-2009, 06:12 AM
Last Post: nacho
  How to clean a HP 35? Miguel Toro 2 385 09-14-2007, 11:52 AM
Last Post: Miguel Toro

Forum Jump: