Trc-457 power supply testing

[jrd426]

Hi, im looking for a test point to check voltage coming from my internal power supply on a trc-457. Can anyone confirm if i test one side of r302 as im not having any luck. Im using the chassis for the neg lead from my meter. Thx in advance

 

[tramd]

It's test point 10, the emitter of TR401 at 13.80 vdc. You can also measure it at C94 on the board but use a transformer can or the metal dividers by the PLL section for ground as the chassis and the board do not share ground.

 

[jrd426]

Thank you Tramd. Much appreciated

 

[tramd]

Here's the SAMS for the TRC 458/457

 

[jrd426]

that comes in handy. Thx again!