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.

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?

On Monday, June 18, 2012 5:30:32 PM UTC-4, hr(bob) wrote:


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

Sure, but I don't know how long it'll take, as the links to the schematic are on a moderated forum that I had to join in order to view/download the PDF; so far I can't get a peep out of anyone there. As an alternative, email me (I can't tell if your address is munged or not) and I'll give you a link to the forum, which you'll have to join.