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DMcMahon · 27th Mar 2020, 5:52 pm

Investigations ongoing. For the change of HT & LT voltages have tried various including another set of reservoir capacitors and a replacement Selenium bridge rectifier with no change.

The terrible noise issue is ongoing, intermittently occurring or can be manually initiated by lightly tapping the EL 42, after various checks think it is the valve itself, just trying to prove it conclusively.

27th Mar 2020, 5:52 pm	#42
DMcMahon Dekatron Join Date: Apr 2019 Location: Worthing, West Sussex, UK. Posts: 6,604	Re: Grundig TK 5 Restoration Investigations ongoing. For the change of HT & LT voltages have tried various including another set of reservoir capacitors and a replacement Selenium bridge rectifier with no change. The terrible noise issue is ongoing, intermittently occurring or can be manually initiated by lightly tapping the EL 42, after various checks think it is the valve itself, just trying to prove it conclusively.