I'm definitely gonna look into that if I don't have any luck soon! Scrapped the probes I was using with 2" of exposed metal tips and brought my fluke home so shouldn't be shorting anything now.
Current state of affairs is monitor powers on for split second then goes off. lifted D10 and power stays on. B+ is now 130v, also 130v at TR15 HOT. TP14 reads 245v (way high should be 190?) tested TR14, TR18, c40, c41, c36, r74, r77, d12, d13. All good. Gonna carry on checking components in this area unless there's some specific ones I should be hitting?
Also don't get a picture but if I turn screen control up on the LOPT I get a single horizontal line. Does this mean the LOPT is OK or can I not make that assumption?