Quote:
Originally Posted by Electronic M
If you work on any hot chassis sets an isolation transformer is usually a must....If you never power up the set disassembled (which prevents a LOT of troubleshooting methods) you usually can get away without one but some non-UL sets and older sets can be dangerous to opperate without a variac even fully assembled....For instance I've got a 40's Sonora radio phono combo where the tone arm, mode and motor switches which are all metal are electrically hot if the unit is plugged in the wrong way.
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I think you meant to say "isolation transformer" instead of "variac" in that last part.