For sure it was the tube, before I started the rejuvenation I shorted the coil in series with the heater that fixed the dull (but also convergence
) problem.
For now I have three main faults left in the set:
- Vertical lines start rippeling after warming up slightly. Even after replacing the well known C2670/C2621/C2633 and R3628 (someone else placed a wrong resistor there). using coldspray I located that the fault is at the IF/SYNC module, seems I have to overview that toroughly
- Vertical linearity is bad, top and bottem are cramped, but the middle is strechted out. Not very badly but pretty noticable with vertical pans. C2573 (replaced), C2575(replaced), C2574(replaced), R3575, R3574 seems all be good . .
- But what really puzzles me is the +210V. The picture has some smearing and very mild colour flashing. The known R3415 around T7413 is OK, even is capacitor C2405. I all resoldered (completely removed old solder as it really doesn't want to flow again) this circuit.
Looking Furhter, the +210V seems too low, around 190V, measured at the connector on the tube PCB and not fully stable. C2406 and C2638 measure good. G2 Also the LOPT (core) get's very hot, I cannot touch it after a hour on time) . .
Someone an idea about this last problem?