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Welsh Anorak · 2nd Oct 2019, 5:10 pm

Ah. The Mullard A51-570x was not a good tube, fitted to KT3 sets in the main, and went low emission very quickly. Odd, as the T24s I've come across have all had Toshiba tubes fitted. It's very likely the tube is low emission and a resistor has been bridged to boost the heaters. Trace back the heater connections and I'll bet you fing a "repair" has been done. I hate to say this, but if that's the case it really isn't worth carrying on with the repair. Sets of this vintage aren't that hard to find.

2nd Oct 2019, 5:10 pm	#23
Welsh Anorak Dekatron Join Date: Apr 2005 Location: North Wales, UK. Posts: 6,918	Re: RRI T24E Chassis Ah. The Mullard A51-570x was not a good tube, fitted to KT3 sets in the main, and went low emission very quickly. Odd, as the T24s I've come across have all had Toshiba tubes fitted. It's very likely the tube is low emission and a resistor has been bridged to boost the heaters. Trace back the heater connections and I'll bet you fing a "repair" has been done. I hate to say this, but if that's the case it really isn't worth carrying on with the repair. Sets of this vintage aren't that hard to find. __________________ Glyn www.gdelectronics.wales