Originally posted by ChrisPlatt he great thing about Pentax film SLRs is that they can almost always be made to work like new at very modest cost.
Not so most other brands - there is simply no equivalent to Eric Hendrickson for those.
Very true for models made up until the early 1980s and much less true afterwards. With the advent of fully electronic shutters and programmed auto exposure, the cameras became significantly less serviceable. This is true across brands with very few exceptions (LX, F1, FE2, FM2, and such). My friendly local camera repair guy told me so. (Mike Knight at Knight Camera and Repair here in Vancouver.) The mirror box/shutter assemblies on the newer cameras cannot really be repaired or adjusted, so replacement is usually the only option. To compound matters, parts are increasingly difficult to find and often a donor body is required...assuming that it does not suffer from the same problem. Add in the cost of the shop time for the repair itself and it is usually cheaper to simply chuck it.
Perhaps Eric will weigh in on this thread with his comments, but in his absence, perhaps you can share why a ME Super would be more easily repaired than an XR7? Both are highly dependent on electronics, share very similar non-repairable electronic shutters, and have proprietary circuitry for which replacement modules are no longer available. From my perspective, both are throw-away cameras not worth repairing beyond replacing seals and cleaning the viewfinder and doing basic lubrication of the film transport. Adjustment? There is almost nothing to adjust! Even the shutter release is an electrical switch.
My advice to people shopping for a manual focus K-mount camera is to definitely check out Pentax, but not discount other makes. The eventual purchase decision should be based on usability, condition, and features. I like my Super Program. It is well-made, solid, and has a nice feature set. It is not, however, my go-to auto-exposure body. It is too small for my hands and I find the up/down buttons and the clumsy mode switch tedious in actual use. The XR7 has better control layout (changing shutter speed is a one finger operation), equivalent quality viewfinder, and AE-Lock. OTOH, the Super Program shines with a higher top-end shutter speed, program exposure, and true TTL flash automation.
I paid about $40 for the Super Program (body only) in EX+ condition and consider it a good value at that price point. I paid $25 for the XR7 bundled with two (Tamron and Tokina) zooms, but was prepared to pay up to $40 with normal lens. (I paid $45 for the XR-2s with normal lens and don't regret the purchase.)
If any of the above bodies fail, I will see what the repair guy says, but experience has taught me that the cost for any repair is minimum $70 and it goes up from there. (For example, I have over $200 in my KX body at this point...) Most likely the poor broken camera will go directly to the trash or be donated to the shop as a parts body.
Steve