rozencratz
Member
The LFO LED on my Magnetron Delay isn't turning on and I'm at a complete loss for what to try next to make it work after weeks of trial and error. As far as I can tell, everything else on the board is working. All potentiometers seem to work as intended I think. The LED1 turns on when expected.
Things I've checked/did to try and find the root cause:
- Checked all component values are correct
- Checked voltages are expected where expected
- Checked continuity with every pad, including to the LFO section and can confirm the A/K pads for LED have continuity as expected
- Changed LED colors and continuously confirm that the LED turns on
- Changed ICs
- Took the LED off board, connected K direct to ground and A to a 4.7k resistor and then tried to get a light by connected the CLR to the various parts of the circuit that are connected to the "LFO" section- still nothing. Using this method and connecting the CLR to V+ does turn on the LED
Would love any ideas for what to try next to make it work.
Things I've checked/did to try and find the root cause:
- Checked all component values are correct
- Checked voltages are expected where expected
- Checked continuity with every pad, including to the LFO section and can confirm the A/K pads for LED have continuity as expected
- Changed LED colors and continuously confirm that the LED turns on
- Changed ICs
- Took the LED off board, connected K direct to ground and A to a 4.7k resistor and then tried to get a light by connected the CLR to the various parts of the circuit that are connected to the "LFO" section- still nothing. Using this method and connecting the CLR to V+ does turn on the LED
Would love any ideas for what to try next to make it work.
