Transvision 7FL restoration thread

[benman94]

Originally Posted by Kevin Kuehn

Ben, It looks like you have the same tuner that was used in the models A1 and A3 as shown in Riders 2. Unfortunately there's no tuner schematic shown there either. Very interesting set you have there.

I think you're right Kevin. I pulled my copy of Riders 2. Good eye! It seems the tuner in the Sightmaster and Transvision 10 inch kits is identical, with the exception of the fine tuning knob. My version has a small window cut out above. There's a small plastic wheel with the FM band frequencies painted on it so it can function as a tuning dial for the FM band. The Transvision and Sighmaster 10-15 inch sets with the same tuner just have channels 2-13, no FM, so there's no need for the fine tuning dial.

[benman94]

Kevin is 100% right. The tuner assembly in this Sightmaster 10 inch set is the same as the tuner in my kit. Only the mechanics of the fine tuning knob differ slightly.



The large pulley on the fine tuning shaft of the tuner pictured is replaced with the aforementioned painted dial on mine. Somebody HAS to have seen documentation on this tuner at some point. Anybody?

[Kevin Kuehn]

I assume your fine tuning control will fine tune the individual TV stations as well as tuning for the FM radio band. Just makes sense that it would remain active on all channels, don't you think?

[bandersen]

Originally Posted by benman94

The first order of caps is in, I just have to order the micas and the HV caps now. The 0.2 μF 2.5 kV HV filter cap is going to be a real pain to find. I may end up having to parallel two 0.1 μF 2.5 kV film tubulars. I see no reason why that shouldn't work...

Allied has an ASC film 0.22uF rated for 4,000 volts.
http://www.alliedelec.com/asc-capaci...4000/70006925/