Yes, attaching the 0V between smoothing caps to chassis was done - I did this initially since I had humming... since attaching to chassis, hum is gone.
Although this did not improve the Interference with Cell phone. So I just keep my cellphone away from the amp and no more noise. Violla!
Although this did not improve the Interference with Cell phone. So I just keep my cellphone away from the amp and no more noise. Violla!
John,
It would be useful if you could post pictures or at the very least a schematic, as we can speculate until the cows come home as to what the problem is, but I suspect someone will be able to put their finger on it very quickly with pics / schematics.
As you have discovered cell phones cause a lot of interference, try putting it next to a CRT and ringing it! 😉
All the best,
Ian
It would be useful if you could post pictures or at the very least a schematic, as we can speculate until the cows come home as to what the problem is, but I suspect someone will be able to put their finger on it very quickly with pics / schematics.
As you have discovered cell phones cause a lot of interference, try putting it next to a CRT and ringing it! 😉
All the best,
Ian
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