In order for the output to be around 15V, there MUST be a short circuit. It
may be internal to one or more components, or on the PCB - an etching fault
(like a hair lice copper bridge under the solder mask) or a soldering bridge.
Is the LED lit? It should be introducing a voltage drop if it is. Is the
wire connected to the right spot?
Ken
Ken
Ken Stone sasami@... or ken@...
Modular Synth PCBs for sale <http://www.blaze.net.au/~sasami/synth/>
Australian Miniature Horses & Ponies <http://www.blaze.net.au/~sasami/>
may be internal to one or more components, or on the PCB - an etching fault
(like a hair lice copper bridge under the solder mask) or a soldering bridge.
Is the LED lit? It should be introducing a voltage drop if it is. Is the
wire connected to the right spot?
Ken
Ken
>Spoke too soon. Output 5 still stuck on and it outputs 15V ( the_______________________________________________________________________
>other outs put out around 11V.
>
>note: worked perfectly when I originally finished the module. The
>problem didn't arise until I switched all the 2.2K resistors to 15K
>(to make the LEDs dimmer). Do you think it's a bad component
>somewhere or are the new resistor values *!@#*!ing it up?
>
>Thanks again,
>Peng
Ken Stone sasami@... or ken@...
Modular Synth PCBs for sale <http://www.blaze.net.au/~sasami/synth/>
Australian Miniature Horses & Ponies <http://www.blaze.net.au/~sasami/>