Originally posted by reh321 The "resistor" and other 'electronics" are the result of mention in servicing reports by professionals.
I will continue to mention them until you explain exactly how metering can be correct for LCD - but bad for OVF - as a result of a bad solenoid*
Repeating nonsense doesn't make it become true, you could even start praying if you wish.
There is no resistor, so if any servicing report mentions a fried resistor, it is either a lie, an invention (same as a lie) or it is some kind of error written by a person which misunderstood something (which I hope and think was just the case)! Period!
"Other electronics" is wishy washy and it wasn't a professional report but a guess, because the K70 wasn't open yet!
**
The only "other electronics" would then be the motherboard itself because:
The solenoid is directly controlled by a socalled "plunger-driver" which is an integrated circuit (IC)!
So this report from Slovenia was just a guess, nothing more.... the price reflects the usual exchange of the solenoid with the same green China version. Anyway, Slovenia doesn't have an official Ricoh-repairshop!
*You* have never inspected any K30 or similar in real life, your information is collected data.
Guess work, and in this case very bad guesswork.
Period!
*Similar to adding zeros: Remains Zero
*Well, I actually have explained this VERY EXACTLY, it would/should be your task to remember or research
but... I shall explain it again:
- LCD Liveview: The solenoid acts/switches TWICE and thus it gets released ... at least for a time.
- OVF: The solenoid acts/switches ONCE ONLY and remains stuck
If you set a DSLR to Liveview (goes for those with motors instead of solenoid as well!), the aperture is opened right away to f4,0!
This is because now the camera sends the "view" "live" to the LCD-screen, you can see what the camera sees.
But a camera with a bad solenoid won't open the aperture to f4,0 but keeps it closed because the solenoid is stuck.
And yet it fires and often works because the solenoid acts twice. But the mirror is already open, there is mor umpf
available (mA, i.e. power). Once to measure and once to take the picture.
Sometimes the first action of the solenoid won't happen so measuring goes wrong but then it acts for the (wrong measured)
aperture. So you get a picture but not the best.
But then after a while the solenoid remains stuck in LW as well and pictures are dark as well
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** Update: The "other electronics" turned out to be just the solenoid, the repair-place in Slovenia exchanged the complete "diaphragm-control-unit" on the failed K-70. The invoice did not mention anymore "other electronics" and particular not any (imaginary) resistor!
Last edited by photogem; 12-11-2019 at 02:01 AM.