I have 2 valve amp modules complete with power and output transformers that I found at my local tip, I like most people here just love old technology and couldn't bear the thought of them being used as landfill, however the valves are missing on both of them but I have been able to identify them, they are part of a PYE Pedigree T23 hybrid television about 1968 vintage so if anyone here can help me I will be able to put these amps to good use instead of salvaging them for parts

Thanks SimonB

PS - I can supply photo's if that helps.

PYE T23, T23C and T23D all show 6GV8 as the audio output valve.
Most other brands used this valve as a vertical output.
JJ

Here are some service details for the T23 chassis.

It shows voltages, speaker impedance and resistance in ohms of the output transformer windings.

Pye T23 Circuit Diagram

Thank-you Johnny and MonochromeTV for your posts, the PDF of this circuit is of great help as the value of C5 on both the amp modules is not marked, I have some 6GV8's so I will start tinkering and see if I can get them to work so watch this space and I will let you know if I am successful.

Thanks SimonB

Both Pye and Kriesler used the 6GV8 in an audio capacity. Kriesler in a mantle radio, to use up out-of-spec valves from TV production!

Pye's reason was different. Rationalisation of inventory cuts costs, both manufacturing and service.

The T23 was a very advanced design for its time, the all solid state T26 which followed it even more so.

The 6GV8 is very similar in appearance to the 6GW8 but has a different pinout and quite different characteristics - it biasses differently. It also lacks the 6GW8's internal screen between the triode and the pentode.