Does anyone know anything about these ? I know the basics but there are det ails missing from the print, LIKE THE PINOUT of the CRT !
I can see though (thank you Drs Budrous and Stewart) so I can see the thick er wires, those are pretty much at cathode potential, -500 volts. I can als o find the deflection plates and with the centering make the DC voltages eq ual, still no display.
Unless there's something I missed I need to get into the grid and focus vol tages and if those are all there, the CRT is bad ?
From what I hear you would need a SWAT team and a bunch of automatic weapon s to get a replacement CRT. Even people with experience on these things, ho w many receivers had built in scopes ? I saw one in another brand once but can't remember what it was, maybe a Kenwood ? Other than that only Marantz and then even very few models.
I got the other problems fixed, it had a fault on the one power amp board a nd a bad transistor on the tone amp board which is by the way stuck to the chassis with double sided foam tape ! For what they charged fro these thing s, foam tape ? And you should see the PITA it is to remove, I was thinking "This board it gonna break", but it didn't.
What you really need is a Fein cutter with an L shaped blade. (they are nor mally used to cut windshields out of cars)
Anyway, thanks in advance for anything useful on this matter. It makes a bi g difference in the value of the unit.