Mighty Monarch of The Air

[Phil Nelson]

Your Sams doesn't include model waveforms for the vertical circuits, unfortunately.

It does include a voltage chart. You can use a voltmeter to check voltages on V13 and V14 and then compare them to the voltages given in the chart. If you find one that's way off, you can then check the components in that neighborhood. Put one hand in your pocket when touching the voltmeter probe to anything on the live chassis.

Also double-check your previous work, making sure that you (or a previous handyman) didn't miswire a replacement capacitor, drop a blob of solder somewhere, or accidentally nudge some component so that it creates a short circuit. Even experienced restorers slip up every once in a while.

Phil Nelson

[VintagePC]

Originally Posted by Phil Nelson

Put one hand in your pocket when touching the voltmeter probe to anything on the live chassis.

On top of that, if you have alligator clip leads or test leads, I like to connect one end to the test points before I power up the set so there's less danger of a slip-up with the probe- it's just clipping and unclipping the other end(s) safely away from the main part of the set.


Also, on top of the one-hand-in-the pocket rule: if you have electrically insulating rubber gloves, put on one (or both, if you can work with them) just in case you forget and do take that hand out of your pocket.

Safety first - Voltage hurts, current kills... and your body's resistance is futile. (Sorry for the pun... I'm terrible with them )