Work done to the radio:
"Replaced in excess of 4 dozen electrolytic capacitors, most of which were leaking
Repaired a copper circuit trace that was eaten away by leaked out electrolyte
Replaced an LC7217 Integrated Circuit (PLL Frequency Synthesizer) that had been damaged internally by corrosive electrolyte from the leaking capacitors
Cleaned all circuit boards
Ultrasonically cleaned 7 ICs which I had to remove and reinstall
Replaced the rubber cassette drive belt because it had deteriorated into a tarry mess
Replaced the Cassette drive motor because the tar from the belt had seeped into the bronze motor shaft bushing
Cleaned the contacts of the Cassette audio signal reversing switch and applied anti-oxidant compound to them.
Cleaned and demagnetized Cassette head
Cleaned all Cassette Capstans and rubber Pinch Rollers
Repaired 6 of the faceplate button blister switch contacts by recoating them with a silver-based conductive compound
Cleaned the entire faceplate
Tested all functions at 25 and 135 degrees F for 12 hours
Tested at extreme humidity level of 85% RH
Note: the majority of the capacitors replaced with solid tantalum caps, which will never leak, and the others are very long life Panasonic electrolytic aluminum-can caps rated for 105 degrees C, which have an excellent reputation for long life.
Personal note, I'm an electronics tech for Ridgid since covid killed my dealership photography job, and I'm fixing circuit boards every day in the repair dept, and customers never get charged less than 75 an hour labor, for fast work, or about 400 to get soldering and replacing electronic components.
I'm telling you, this guy is doing a ton of work for very little profit
That is a very reasonable price for that amount of work. You're right that there can't be much profit there.
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