Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems.

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Default Proform treadmill fixed.

Just a follow up, it turned out the leads on my DMM led me down a
false path for a little while, the next time I took readings on the
LM324 all the op-amps on it read the same as the other LM324 on the
circuit board. It turned out to be a faulty LED (SCR TRIG), replaced
it
and now the treadmill is working once again.

The customer service No. was a dead end, should be called the customer
no-service no.,
brouught to us by Nordic Trak.

Jeff, thanks for the helpful links; I also ran across an electronics
surplus place that had several working boards in stock for 29.95. I
was gonna post a link to the (hand-drawn) schematic once I'd gained
permission from its author, still working on that.
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Default Proform treadmill fixed.

On Jun 18, 4:09*pm, mike wrote:
Just a follow up, it turned out the leads on my DMM led me down a
false path for a little while, the next time I took readings on the
LM324 all the op-amps on it read the same as the other LM324 on the
circuit board. *It turned out to be a faulty LED (SCR TRIG), replaced
it
and now the treadmill is working once again.

The customer service No. was a dead end, should be called the customer
no-service no.,
brouught to us by Nordic Trak.

Jeff, thanks for the helpful links; I also ran across an electronics
surplus place that had several working boards in stock for 29.95. *I
was gonna post a link to the (hand-drawn) schematic once I'd gained
permission from its author, still working on that.


Can you make the hand-written schematic available to those of us who
are interested?
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