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Old 11th Mar 2020, 4:57 pm   #212
DMcMahon's Avatar
Join Date: Apr 2019
Location: Worthing, West Sussex, UK.
Posts: 1,460
Default Re: Grundig TK 819 Any Useful Info

After replacing the open circuit R9 (at Post # 207) on the EF 86 valve and restoring normal anode & grid voltages, tried playing a tape again and was amazed that now get half reasonable playback sound with plenty of volume ! so this is somewhat encouraging

Now need to test recording and also try and get the clutch rubber replacement material work looked at (although may be a waste of time on the Take Up hub as no solenoid wiring).

Also need to get back to the GI/GII contact set operation for the 7.5 ips speed changeover by the centrifugal motor action, previously was struggling to get GI contacts to electrically to make.
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