Well. I guess the Tenma gets no love. Oh, well. Moving on to repair report #1.
Step 1 was opening the case.
Step 2 was tracing the power from the cord through various cables to make sure there's power to the iron. There is. I was quite surprised to find that the voltage is full bore 120V. I thought that iron would be powered through one of the boards. How did I figure out the voltage , you ask? I slipped with a probe, briefly shorted two of the contacts, and made pretty sparks.
?
After finding out that there's power to the iron, I moved on to the pot that the temperature knob turns. Its a 1K pot that almost, but not quite, out of tolerance. I'd call it pretty good for something that was installed in the early 80's.
The connector from the transformer to the main board is loose. I guess I'll be replacing that cable at some point.
Conclusions so far: I need a new iron to get the unit working to the point where I can decide if the loose connection is worth worrying about or not. Parts on order. On to pictures!
Main board of the unit, with the transformer out of the case and partially in the picture at the bottom.
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