REMOVE THE BATTERY ... REMOVE THE BATTERY, PRESS THE POWER BUTTON 5 TIMES ... THIS REMOVES ANY RESIDUAL POWER IN THE CAMERA .... CLEAN THE ROTERY SWITCH (camera top right corner) WITH ISOPROPOL ALCOHOL ON A COTTON SWAB OR COTTON BALL ... DRIP SOME ALCOHOL INTO THE CREVICE BETWEEN THE ROTERY SWITCH AND THE CAMERA BODY, ROTATE THW SWITCH A DOZEN TIMES IN BOTH DIRECTIONS AND ALL WILL BE FINE ...
In the past I have found that you could clean the battery terminals, both at the bottom of the battery bay and on the battery lid with lighter fluid and a cotton swab and get the camera up and running, but the cleaning fluid needs to be lighter fluid as alcohol didn't do the trick for me ... AND the type of battery is pretty critical too, as regular alkaline batteries do not have sufficient current to do the job, I use the Energizer Ultimate Lithium battery and coat the ends with dielectric grease (just a dab/small amount) ... I have had some success using this described method ... thank you, good luck ... Jim Nickerson, Pentax user and repairer ... 8)
Thank you a million times AND Massively Big Hugs to you for saving me hundreds of dollars ... I have an Amana washer and one of the two capacitors was giving unusual readings as indicated in this "IFIXIT" manual, so I decided to re-solder the one that gave a strange reading and viola, it cured the problem immediately ... the thing that alerted me to a soldering issue was the dull colour of the solder on that one capacitor, whereas the other one had bright and shiny solder ... thank you a million times for all that you do to enlighten and educate the public and save us a few dollars ... Blessings be upon you and your kind heart ... 8)