Tektronix 434 s/n below 500000 faulty ps.

[johnmcgivern]

Thanks Craig found cold solder joint on diode bridge redone all of them have 325vdc at Q1080 and collectors of Q1030, Q1032 but no lights on front panel or low voltages present.
I am not sure how to check low voltage supplies to gnd ie resistance. Can you explain how to check the different resistances to gnd so I can find out where the short is hopefully. Do you have to remove the plug ins ie P114 etc.