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Station X · 9th Aug 2021, 4:32 pm

Lawrence said output valve voltages.

The output valve is V3B, the pentode section of a UCL82.

Pin 6 Anode.
Pin 7 Screen Grid.
Pin 2 Cathode.
Pin 3. Control grid.

Valve pins number clockwise from the gap or spigot when seen from under the chassis.

The DC voltages should be measured with respect to (WRT) chassis.

All this is in the manufacturer's service sheet, which is where I got it from.

EDIT. Posts crossed.

9th Aug 2021, 4:32 pm	#12
Station X Moderator Join Date: Jan 2003 Location: Ipswich, Suffolk, IP4, UK. Posts: 21,288	Re: Ekco U332 Lawrence said output valve voltages. The output valve is V3B, the pentode section of a UCL82. Pin 6 Anode. Pin 7 Screen Grid. Pin 2 Cathode. Pin 3. Control grid. Valve pins number clockwise from the gap or spigot when seen from under the chassis. The DC voltages should be measured with respect to (WRT) chassis. All this is in the manufacturer's service sheet, which is where I got it from. EDIT. Posts crossed. Attached Thumbnails __________________ Graham. Forum Moderator Reach for your meter before you reach for your soldering iron. Last edited by Station X; 9th Aug 2021 at 4:42 pm. Reason: Circuit extract added. You're only getting the pentode section!