UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post - McMichael 135s

cathoderay57 · 2nd Aug 2020, 9:00 am

Hi Edward, if you're looking at the advert for the 138 which boasts a 5W output, the valve line-up is different to the 135. I cannot find any service data for the 138; I must have repaired mine using test and replace. However, to the best of my recollection, there is an AC/HLDD AF pre-amp stage. The AF output was probably an AC2/Pen but might have been an AC5/Pen. That said McMichael's advertising dept was not shy of blowing its own trumpet - I have a framed advert for McMichael Radio that bears the slogan "Costs a little more, so much the better!" Cheers, Jerry

2nd Aug 2020, 9:00 am	#19
cathoderay57 Nonode Join Date: Oct 2017 Location: Bristol, UK. Posts: 2,384	Re: McMichael 135s - a comparison. Hi Edward, if you're looking at the advert for the 138 which boasts a 5W output, the valve line-up is different to the 135. I cannot find any service data for the 138; I must have repaired mine using test and replace. However, to the best of my recollection, there is an AC/HLDD AF pre-amp stage. The AF output was probably an AC2/Pen but might have been an AC5/Pen. That said McMichael's advertising dept was not shy of blowing its own trumpet - I have a framed advert for McMichael Radio that bears the slogan "Costs a little more, so much the better!" Cheers, Jerry