UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post

Chris55000 · 17th May 2019, 9:37 pm

Hi!

Try not to laugh too much, but have you tried boiling the servo module in fast–boiling water for about 20 minutes in a pan of water?

Quite a number of epoxy fillings have a "Glass Transition Temperature" of about 70–80°C, so if you boil the module for about 20 min, that will be above the G.T.T., after which you might find the filling material has softened somewhat, enabling you to try digging it out with a screwdriver, etc., if you're careful – it's worth a try, but I'd make sure you can source a spare unit just in case!

Chris Williams

17th May 2019, 9:37 pm	#6
Chris55000 Nonode Join Date: Aug 2007 Location: Walsall Wood, Aldridge, Walsall, UK. Posts: 2,874	Re: Bell and Howell TQII 1652 16mm projector Hi! Try not to laugh too much, but have you tried boiling the servo module in fast–boiling water for about 20 minutes in a pan of water? Quite a number of epoxy fillings have a "Glass Transition Temperature" of about 70–80°C, so if you boil the module for about 20 min, that will be above the G.T.T., after which you might find the filling material has softened somewhat, enabling you to try digging it out with a screwdriver, etc., if you're careful – it's worth a try, but I'd make sure you can source a spare unit just in case! Chris Williams __________________ It's an enigma, that's what it is! This thing's not fixed because it doesn't want to be fixed!