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LyntonP · 16th Feb 2019, 7:07 pm

Very kindly presented with a Roberts R66 last weekend. Totally silent. Checked LT and it was ok at 2.6v, but HT was down to about 40v. Replaced selenium rectifier with a diode and resistor and after some experimentation with the resistor achieved 90v HT.
Set working well but took the precaution to change the output grid and AGC line capacitor plus one electrolytic which seemed to be leaking.
The case was rather dirty so spent an evening giving it a good scrub and polished it with saddle and harness cream to give it a nice sheen. Speaker grill backing fabric was rotten so this was replaced. Handle was missing so made a new one (not same colour but looks ok).
Set plays well and even picks up stations in my metal shed through the ferrite aerial.
Thanks again to fellow forum member Tim for the opportunity to work on a classic little set.
Lynton

16th Feb 2019, 7:07 pm	#1
LyntonP Hexode Join Date: Nov 2018 Location: Greater Manchester Posts: 305	Roberts R66 Very kindly presented with a Roberts R66 last weekend. Totally silent. Checked LT and it was ok at 2.6v, but HT was down to about 40v. Replaced selenium rectifier with a diode and resistor and after some experimentation with the resistor achieved 90v HT. Set working well but took the precaution to change the output grid and AGC line capacitor plus one electrolytic which seemed to be leaking. The case was rather dirty so spent an evening giving it a good scrub and polished it with saddle and harness cream to give it a nice sheen. Speaker grill backing fabric was rotten so this was replaced. Handle was missing so made a new one (not same colour but looks ok). Set plays well and even picks up stations in my metal shed through the ferrite aerial. Thanks again to fellow forum member Tim for the opportunity to work on a classic little set. Lynton Attached Thumbnails __________________ Never buy a mermaid a pair of socks!