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ben · 6th Feb 2017, 3:21 pm

Most of those readings are about half of what they should be. I'd check the resistors.
Are any of the transistors connected to the same heatsink or grounded metalwork?

Odd readings may also be due to cracked print or lifted tag on one of the transistors - had this myself with a player of similar vintage just last week. It looked fine on cursory inspection but was loose.

Had one of those round-headed BC114s fail (intermittent) last month in a Thorn tape machine! Replaced with a BC548.

6th Feb 2017, 3:21 pm	#2
ben Dekatron Join Date: Aug 2006 Location: Madrid, Spain / Wirral, UK Posts: 7,498	Re: Rgd rp231 Transistor record player Most of those readings are about half of what they should be. I'd check the resistors. Are any of the transistors connected to the same heatsink or grounded metalwork? Odd readings may also be due to cracked print or lifted tag on one of the transistors - had this myself with a player of similar vintage just last week. It looked fine on cursory inspection but was loose. Had one of those round-headed BC114s fail (intermittent) last month in a Thorn tape machine! Replaced with a BC548. __________________ Regards, Ben.