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new CD4069UBE shows same issue.. LP dont work
todo:
- solder 150k resistor to freq.pot
2.test/swap 1N capaciator or unswap CD4096 and measure resistor between Pin5 and Pin6 on CD4069.
3. test with oscilloscope - CA3080 ,CD4069 in/out
3. solder 100k in cv-spread..
Result: 13.01.14
- solder 150k in series to wiper on freq.pot same issue as before
- on ic scock for cd4069ube - betweeen pin 5 and 6 no bridge, desolder 1N polyester capaciator - test 1N works
- on CA3080 and cd4069ube 5V power input works, signal on ca3080 pin 2input, signal on pin3 output, signal on cd4069ube input - no signal on output,
after rotation of the pcb - no signal on ca3030, sporadicly - maybe bad solderpoints or cable broken, shaking the module shows sporadicly signal lost.. - solderpoints are very bad.
here you can see at botton the poor cable quality and bad solder points (to much tin)
FINAL:
to get a device with high quality:
- replace the pcb with a new one or desolder all parts and check the traces on pcb
- replace the cheap jacks with switchcraft jacks
- replace the pots or check them
- wiring the panel components without CV-SPREAD
- if this works - try to connect the CV spread function by wiring the cv-spread pot and jack.