k500
I'm sure this will have lit the blue touchpaper with several people on here, but it really is down to a bit of common sense and care. I have never damaged any of my sensors.
Regards
David
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Nicola's Apartments, Kassiopi, Corfu
Some cameras, some lenses, some bits 'n' bobs

I always obtain my cleaning kits from: Just Limited, The Old Shop, Hook, Swindon, SN4 EA.
Or, if you go on their web site (www.cameraclean.co.uk) you can look up the correct kit for your camera before ordering.
I would suggest you purchase a kit that includes a blower bulb as well...
Roger
To add to David's comments - I have four Pentax DSLRs and I clean them fairly regularly, and in the case of my K10, over a period of some four years - with no problems at all. JUST follow the instructions exactly!
Are the hairs seen on the image, or is it seen through the viewfinder?
Bob
The screen is up above the mirror, at the bottom of the pentaprism. If the image is OK then why worry? You may find it will just clear on its own. You may find a blast with the blower brush, up around the focusing screen clears it. Only problem is, it may get some where worse inside your camera.
Not sure if the screen is removable or not on the k500. If it is. it's fairly easy to clean after removing it from the camera. Needs a steady hand and tweezers. There are videos on the web showing how to do this if it is easy to remove.
If the K500 does not have changeable screens, it would have to be done at a service and will probably cost.
Bob
Thanks I think it's had it the dust removal comes on now when I switch it on. Doesn't sound healthy.
When you say 'the dust removal comes on when switched on', do you mean it does a flutter as you switch on or the mirror flips up and stays up?
Bob
It seems like you have got a bit 'spooked' out with your camera and are looking for a good excuse to buy a new one

My Guides to the Pentax Digital Camera Flash Lighting System : Download here from the PentaxForums Homepage Article .... link
Pentax K7 with BG-4 Grip / Samyang 14mm f2.8 ED AS IF UMC / DA18-55mm f3.5-5.6 AL WR / SMC A28mm f2.8 / D FA 28-105mm / SMC F35-70 f3.5-4.5 / SMC A50mm f1.7 / Tamron AF70-300mm f4-5.6 Di LD macro / SMC M75-150mm f4.0 / Tamron Adaptall (CT-135) 135mm f2.8 / Asahi Takumar-A 2X tele-converter / Pentax AF-540FGZ (I & II) Flashes / Cactus RF60/X Flashes & V6/V6II Transceiver
Pjy123
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Kibworth harcourt