[COLOR="Blue"]Hi Guys!
I
truly appreciate the help.
A few updates & thoughts for the discussion:
Let me answer some of Denman's questions first:
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Originally Posted by: denman 
Is the compressor running all the time except when the unit goes into a defrost cycle.
Note that during defrost the compressor, it's fan and the evaporator/freezer fan will all be off. defrost usually lasts about half an hour.
This may also be the case when the control thermostat opens.
You can usually hear it but should also be able to feel it vibrating.
[COLOR="Blue"]I believe the compressor is running way more than it should. Only once in the past week have I even heard the compressor cycle down (shut off - and only briefly. I didn't time it though.). But the vast majority of the time, it's running, as is the compressor fan, and I have yet to see the evaporator coil fan shut off. [/COLOR]
Originally Posted by: denman 
Is the condenser/compressor fan running?
It should be on whenever the compressor is on.
If the compressor is cycling then it is probably a control problem.
[COLOR="Blue"]As above, it's probably running 99% (or more) of the time. The only time I've really heard it shut down is when I crank the thermostat to the OFF position.
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Originally Posted by: denman 
If the compressor is on all the time then it could be :
A sealed system problem. Compressor or low freon see below.
[COLOR="Blue"]That was my first initial fear. What I can't explain is how things went from working to not working well at all in a very short time. Supposing it IS a Freon problem - is it WORTH repairing (vs. new fridge)? So I spend, what? $200? $300 - to have someone come and charge it. For how long? But then what? Maybe the compressor shells out. BUT... that said... if it's just a $50 part or something, I'm game to replace it. The $ is tight right now... I just wish there was a way for a consumer to test this. Even a momentary test / bypass or something I could do to prove this one way or another. [/COLOR]
Originally Posted by: denman 
A defrost problem. The coils get clogged solid with ice and frost so that the evaporator fan cannot pull air through them and therefore it does not cool down enough.
An evaporator/freezer fan problem either not running or not running correctly.
A large door seal leak.
[COLOR="Blue"]I don't think this (defrost problem) is the problem I'm having. Per the pictures already posted, and new ones I'm about to post... no coil clogging frost is ever present. In fact, any frost at all is very "minimal" - no artic snow/frost action here. As above, evap coil fan spinning fast & furious - all the time as far as I know. Here are a couple fresh picts.
This first one shows a overall of the evaporator coils:
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This next one shows the overall compartment & fan - as you can see, fan is on & spinning fast & furious.
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Originally Posted by: denman 
[COLOR="Blue"]This was a useful site. I'm still working my way through some of the tests. One thing they mentioned was testing the thermistor. See the new picts I'm posting here. See what's circled / annotated here:[/COLOR]
Originally Posted by: denman 
Note when checking for frost on the evaporator coils make sure that the compressor has run for at least an hour. If you check them during or shortly afted a defrost cycle then you may reach the wrong conclusion.
[COLOR="Blue"]I waited at least an hour (though compressor is essentially always running).
As of tonight:
Average Fridge temp (measured over an hour via thermocouple on DVM with AVG function on) was: 51.8°F
Average Freezer temp (ditto) was: 25.4°F
Just an aside, the measurements are made with a brand new (less than a month old and freshly calibrated) Fluke DVM, with a J/K thermocouple lead. The temps I'm measuring seem to agree with what I'm "feeling" with my hand just seems way less than really cold freezer or fridge. Milk is spoiling quickly, etc.
Again, I can't thank you enough for your help and patience while I work through this.
--Pete
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