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Radio Road Which tuner to get and getting the most from it. Thank God, for the radio! |
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Radio Road Which tuner to get and getting the most from it. Thank God, for the radio! |
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In Reply to: Amber Model 7 FM Problems posted by mawgui@aol.com on March 2, 2024 at 09:45:53:
Thought the first. The good thing about an intermittent problem that shows itself after a component "warms up": These are (often, not always!) easy to trouble shoot with a can of "circuit chiller".
Acquire a can (e.g., see link below), pop the top of the tuner, and spray components (transistors, capacitors, chokes, even ICs). If chilling one of them brings the operation back to normal, that is probably the bad one.EDIT: Of course, it's also always possible that the "lesion" is a (slightly) cracked trace on a printed circuit board, or a poor solder joint (or even an unsoldered connection on one of the PC board).
Thought the second. I had (have!) a Sangean HD (hybrid digital) FM tuner that had a somewhat similar symptom. It would work perfectly for a minute or less, then the reception would slowly fade away over the next minute or so.
With the plan of doing the kind of brute force troubleshooting described above, I noticed a couple of multi-wire connectors, including one ribbon cable. I reseated them (all) and, lo and behold, ameliorated the problem. :) My guess is that the circuit's heating up caused the connection on one or more of the wires in one of the cables (in the power supply, in this case: see arrow in image below) to loosen up enough to cause the fault. This tuner is still working well without intervening interventions :) and sounds pretty darned good, actually.Offering these thoughts strictly "as is" and for what it is worth! I have never seen an Amber tuner -- although I did once have a rather nice little Amber preamp, which I passed along to the late, great AA alum "LWR" (Larry) when he was in need of one. :-|
all the best,
mrh
Edits: 03/03/24 03/03/24
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- two thoughts - mhardy6647 13:26:43 03/03/24 (0)
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