UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post - Regentone A133 HT smoothing capacitors, V4 cathode resistor

Thyratron Valve · 17th Sep 2019, 10:05 pm

Good evening I am working on a A133 and a little puzzled that the two caps 23 and 24 in the set are both 50uf, but the Trader sheet shows these as 32uf, the can looks original also another clue is most of the solder joints have a light red paint mark on them which was also on these, Have tested these out of circuit and are not very good so will be changing them anyhow along with all the other waxy ones.

The other question I was thinking of taken the load off V4 by changing the cathode resistor R14 from 180 to 220 ohms
I would be interested in any of your comments

Kind Regards
John

17th Sep 2019, 10:05 pm	#1
Thyratron Valve Triode Join Date: Aug 2017 Location: Ipswich, Suffolk, UK. Posts: 22	Regentone A133 HT smoothing capacitors, V4 cathode resistor Good evening I am working on a A133 and a little puzzled that the two caps 23 and 24 in the set are both 50uf, but the Trader sheet shows these as 32uf, the can looks original also another clue is most of the solder joints have a light red paint mark on them which was also on these, Have tested these out of circuit and are not very good so will be changing them anyhow along with all the other waxy ones. The other question I was thinking of taken the load off V4 by changing the cathode resistor R14 from 180 to 220 ohms I would be interested in any of your comments Kind Regards John