Telequipment DM64 'scope help with missing X scan

[boater sam]

OK, many voltages taken. What a job finding components on this pcb.
Mains in is 239v set to 240v tapping.

Voltages on pin outs.
110/25      4.8v   R121
110/34      108v  spec is  110v
110/35      -14.57  spec is -14v
110/36     11.06v
110/37      11.08v spec is 14v
110/38      191v
110/41      7.2v     base of TR79
110/42      6.67v    x5 off, emitter TR79
110/43      6.3v   base TR78
110/44      6.43V
110/45      10.8V  R103
110/46      0.06V collector TR76
110/47      7.81v  R142/R143/anode D81

TR77 and TR81 collectors at 192v
R140 base TR81    11.2v
R139  base TR77   11.2v
Base TR 76    0.7v
Basr  TR82   -13.6v
R152 jnc D69       75v
R144  6.3 & 6.2 opp ends

Tested on magic Chinese box TR5, TR76, TR77, TR78, TR79, TR81, TR 82

beam locate does nothing

Trig level and stability randomly switches dots on/off when fully anti clock

Single shot and reset appears to switch dots on/off

Gate out socket is at 0.63v AC
Sweep out is at 11.11v AC
Cal is at 0.244v DC  AND 0.263v AC

Across R124 is 4v
across R123 is 104v
Across R122 is 0.7v
Across R136 is 0.1v
Across R138 is 0.9v

X plates are at 286v & 290V  There is 100v across both plate zeners.


Hope that all adds up to something. The 14v rail being low is a bit strange, disconnecting the feed at 110/37 does not change it.All measured with DVM

Thanks for your patience,
Sam.