UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post - AR88

cathoderay57 · 19th Aug 2019, 8:01 pm

I seem to remember that the AF output transformer primaries tend to fail on these radios as a result of a surge in anode current when switching from stby to on. May be worth a con check. I don't think the AF output valve has a cathode resistor and a mod was recommended to add one to bias the valve off a bit and limit the current. Cheers, Jerry

19th Aug 2019, 8:01 pm	#18
cathoderay57 Nonode Join Date: Oct 2017 Location: Bristol, UK. Posts: 2,388	Re: AR88 - New keeper I seem to remember that the AF output transformer primaries tend to fail on these radios as a result of a surge in anode current when switching from stby to on. May be worth a con check. I don't think the AF output valve has a cathode resistor and a mod was recommended to add one to bias the valve off a bit and limit the current. Cheers, Jerry