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 no LED on a OCD ?
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hot tubes
Silver Member

Canada
162 Posts

Posted - 07/18/2009 :  06:18:30  Show Profile  Reply with Quote
my LED on my OCD does not work , no DC volts at the LED .
3PDT switch seems to work right , i removed the LED, and it
works , the pedal still passes sound in by - pass mode and in
the O/D mode . this one has me stumped .

any help would be great

thanks

Dr. Bob
Moderator

Australia
6593 Posts

Posted - 07/18/2009 :  08:27:13  Show Profile  Visit Dr. Bob's Homepage  Reply with Quote
Hi hot tubes

You said that the Switch seems to work.
Is there power at the switch?
Is it the correct voltage?
Does the LED have a series current limiting/voltage drop resistor?
Is the resistor OK?
Have you measure & checked the wires to the LED?
Is the LED in the right way around polarity wise?

Did you try a different LED - both ways around?
Did you check the solder joints?

Does it use a FET to switch the volts to the LED?

Was the LED working when you got it?
Or has it been not working all the time?

Regards Dr. Bob
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hot tubes
Silver Member

Canada
162 Posts

Posted - 07/18/2009 :  19:37:47  Show Profile  Reply with Quote
it would help if i could find a schematic for this pedal .
this one seems hard to find .

yes there is power at the switch. and its the correct voltage.
the LED works out of the circuit .
yes i have checked for DC voltage , no voltage to LED
i have tryed a new LED , and the same results ....


thanks for your help DR BOB ...
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hot tubes
Silver Member

Canada
162 Posts

Posted - 07/23/2009 :  07:18:03  Show Profile  Reply with Quote
PROBLEM SOLVED !!

it was just a bad LED conection that was over looked .
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Dr. Bob
Moderator

Australia
6593 Posts

Posted - 07/23/2009 :  09:44:40  Show Profile  Visit Dr. Bob's Homepage  Reply with Quote
quote:
Originally posted by hot tubes

PROBLEM SOLVED !!

it was just a bad LED conection that was over looked .


Hi hot tubes
That's good news.

Can I ask at which end of the wires?

Regards Dr. Bob
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hot tubes
Silver Member

Canada
162 Posts

Posted - 07/24/2009 :  02:28:42  Show Profile  Reply with Quote
i'm not sure what you mean by , what end of the wires ?
but i can't tell a lie , it was a bad solder job by me

thank for your help !!
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