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Hints, Tips and Solutions (Do NOT post requests for help here) If you have any useful general hints and tips for vintage technology repair and restoration, please share them here. PLEASE DO NOT POST REQUESTS FOR HELP HERE!

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Old 17th Aug 2018, 5:28 pm   #1
Viewmaster
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Default Video the switch on.

When you are just about to switch it all on for the first time (First light)
set up a video camera overlooking the area where trouble might brew.

In this way if there is a flash and a bang or smoke emits you can review the video to see exactly where the trouble might be.

One cannot always immediately see where the exact spot is, but the video playback may help to find it.

It helped me recently.
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Old 17th Aug 2018, 8:17 pm   #2
crackle
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Default Re: Video the switch on.

I don't normally switch on like that, I start my sets I am restoring gently, using a 60 watt lamp limiter and also a variac set to about 180v. Monitor the HT voltage as things start to warm up. and watch the lamp limiter to check what happens. It should come on fairly bright, start to go dim and then get slightly brighter as the HT voltage starts to build and the valves start to conduct.
Never had a bang yet, plenty of shocks though, I suppose they could be funny if played back.
Mike

ps. I forgot the German ITT Touring studio I restored recently, that had a puff of smoke from a transistor.

Last edited by crackle; 17th Aug 2018 at 8:22 pm.
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