On Sat, Nov 9, 2019 at 04:00 PM, Peter H wrote:

Take a look at http://w140.com/tekwiki/wiki/7S14/Repairs and the 7S14 circuit
diagram.

You have to read the doc of the 7S11 and the sampling plugins as well.

Note that the 7S14 is a complete horizontal and vertical sampling unit and the 7S11 is just a vertical plugin for the 7000 series *without* its own sampler.
To make use of the 7S11, you need a sampler like an S-4 or S-6. Logically, the floating batteries of the 7S14 are in the samplers but the S-x 'es live without a floating battery supply.
Have a look here as well: http://w140.com/tekwiki/wiki/7S11

Raymond