H7826 PSU, No Signal On Transformer Outputs

[Rob Jarratt]

I have moved on with the work on the H7826 PSU in the TURBOchannel Extender.
However I have found that there appears to be no signal at all on the output
windings of the transformer. I have posted all the details of what I have
been doing here
http://robs-old-computers.com/2017/11/05/repair-progress-on-the-h7826-power-
supply/, and I would welcome any suggestions as to what might cause this?

 

Thanks

 

Rob