Yes, residential AC and refrigeration. The sealed system "norm" usually is that the higher price end product line, SubZero and Viking, are cheaper to repair instead of replacing and vice versa for pretty much everything else. For a couple hundred dollars more, a customer could have a brand new refrigerator. And take into account your parts cost, labor, and warranty period, there is not alot of wiggle room involved. Plus the risk of melting the plastic liners on an evap change out, does not make it an attractive or lucrative job for most businesses.
As far as the technician condemning your neighbor's refrigerator for a supposedly bad compressor, I would assume he did not properly troubleshoot. He decided to collect his trip charge instead of a better paying repair fee. Unfortunately, there are businesses that operate this way.
You would want to check the following to determine if there really is a compressor problem:
1. Evap frost pattern. Then determine if it is a leak, inefficient compressor, or a restriction issue.
2. Compressor start relay and overload.
3. Compressor winding resistance, winding short to ground, capacitor if applicable, amp draw, and megger the windings.
4. Condenser fan operation. Condenser coil cleanliness (especially garage frig)
5. Wire connections.
I would also troubleshoot why the timer and wiring fried. Was it internel or external failure caused? Use the tech sheet or service manual.
Edited by beam current, Today, 01:30 AM.
I think this will work. I once saw it on a cartoon.
Or, on the other hand.....
Troubleshooting the appliance's complex electro-mechanical systems is the methodology in which one must, by using analyitical techniques and the process of elimination, determine the cause or causes of a specific failure. Rarely does this cause of a failure directly present itself for you to see.
To be better equipped to troubleshoot, you will need:
1.) To follow this: Safety first and foremost. Trust your instincts.
2.) Basic hand tools.
3.) A decent DVOM meter. Buy one. Borrow one. You need one.
4.) Last, but certainty not least, common sense. Most of us have it. Slow down and use it.
Now, let's have some fun!
Hope is the power that gives a person the confidence to step out and try.
Success is the maximum utilization of the ability you have.
It always seems impossible until it's done.