Originally posted by wtlwdwgn You might just have a dead battery, i.e., a battery no longer charging. Just my $0.02.
My own istD happens to be suffering from the same ailment as the OP's here. I've seen a few other threads reporting similar problems, and I've been wondering about something.
In my past, I've had to use and therefore often sustain some absolutely geriatric electronic equipment. About the first course of action in troubleshooting, after checking that power is applied and the power switch is on, is to look for liquid-chemical electrolytic capacitors. These guys can be expected to fail after about 5-10 years, and more often than not, replacement will restore devices that have stopped working for no apparent reason. These are the symptoms with failed istD's.
Since capacitors are typically a few $, but getting to them in camera is fraught with great danger (to the camera),
1. Has anyone here actually successfully fixed this problem?
2. Has anyone unsuccessfully mangled their camera sufficiently to have picked up any helpful info?
3. Does anyone have an idea of how other parties do repairs?
4. Is capacitor replacement is involved in the process?
5. Does anyone have access to the camera schematics?
Not wanting to ask for too much ;-), I'll stop here.
Gerry
---------- Post added 04-30-16 at 02:36 PM ----------
I left out an important part: often, capacitors fail by a drop in their internal resistance; that is, their electrical leakage goes up. This will place an extra load on the power supply. If that's a battery, the drain can be large enough to drop its terminal value below the voltage necessary for camera operation, even for a battery in good condition. On the other hand, the output from an AC wall-wart supply is more robust and will maintain its output even if the current drain goes up. (If the drain is bad enough, the first symptom is likely to be overheating of something.)
Exactly the symptoms discussed here.
Gerry