07-13-2013, 08:53 PM
I was a happy person for a while thinking I was done with re-capping.
Before soldering in place the tuning cap I thought of checking if the wires that go to it still connected as they should (I did not see a couple of them and applied a bit of force...nothing ripped but I'd like to know that everything is copacetic) and the best way to buzz it is to the grid caps of RF 6K7 and MIX 6L7.
Then I realized I could not find the grid caps with the wires.
Then I realized they are not there. And I do not remember de-soldering them. This would be the least likely thing I'd do.
So, now I have to figure where the point is where the caps go.
The bad thing about all this is that the RF chassis is, well, not very convenient to work on. So far I successfully escaped the necessity of taking it out.
Judging by 6A8 OSC they use a spare pin on its panel to first bring the wires to, and then solder the caps from there threading the Grid wire through the panel's rivet.
Another sad thing is, there was one last cap #17, from Cathode to GND in parallel with the Cathode resistor, that I overlooked and have not replaced, that is lurking deep inside. It goes to the Chassis, but that Chassis pin is really inside. Cannotreach it without taking out some coils and I do not want that. And I do know all those caps are bad, so I have to change it. And I am not willing to use another Chassis point as this may potentially be harmful (though not likely). Cap #26 connects to a chassis, may try it.
So, does anyone know where were those grid cap soldering points? It will take me time to figure it out, too much stuff there, too crowded.
Before soldering in place the tuning cap I thought of checking if the wires that go to it still connected as they should (I did not see a couple of them and applied a bit of force...nothing ripped but I'd like to know that everything is copacetic) and the best way to buzz it is to the grid caps of RF 6K7 and MIX 6L7.
Then I realized I could not find the grid caps with the wires.
Then I realized they are not there. And I do not remember de-soldering them. This would be the least likely thing I'd do.
So, now I have to figure where the point is where the caps go.
The bad thing about all this is that the RF chassis is, well, not very convenient to work on. So far I successfully escaped the necessity of taking it out.
Judging by 6A8 OSC they use a spare pin on its panel to first bring the wires to, and then solder the caps from there threading the Grid wire through the panel's rivet.
Another sad thing is, there was one last cap #17, from Cathode to GND in parallel with the Cathode resistor, that I overlooked and have not replaced, that is lurking deep inside. It goes to the Chassis, but that Chassis pin is really inside. Cannotreach it without taking out some coils and I do not want that. And I do know all those caps are bad, so I have to change it. And I am not willing to use another Chassis point as this may potentially be harmful (though not likely). Cap #26 connects to a chassis, may try it.
So, does anyone know where were those grid cap soldering points? It will take me time to figure it out, too much stuff there, too crowded.