03-23-2017, 07:09 PM
Today I started cap replacement. This is going to be a tedious process since everything is so intertwined and in many places there are many connections on one terminal. I like to clean things up as I go so wherever I can I remove everything from a terminal, clean it up, and then re-attach everything.
I didn't get too far today before I decided to stop and place an order. I checked several resistors as I disconnected them and most are out of tolerance, such as a 150k that measures 211k and a 330k that measures 404k. So I decided to order every resistor I might need. Overkill? Probably. But Digi-Key is always quick and reasonable...$10.63 for every resistor on the parts list, including 2 270ohm 3W resistors to replace the 135ohm 5W that I damaged when I was trying to remove the can caps. This also includes one extra of every value. So at least I'll have everything on hand if I need to replace a resistor.
I'm also considering replacing the shielded cable that runs from pin 3 of the 7X7 tube to the .006uF cap attached to the wiper on the volume control. I suspect this is just plain old shielded cable, right? Or does it need to be some specific impedance?
Thanks,
Rich
I didn't get too far today before I decided to stop and place an order. I checked several resistors as I disconnected them and most are out of tolerance, such as a 150k that measures 211k and a 330k that measures 404k. So I decided to order every resistor I might need. Overkill? Probably. But Digi-Key is always quick and reasonable...$10.63 for every resistor on the parts list, including 2 270ohm 3W resistors to replace the 135ohm 5W that I damaged when I was trying to remove the can caps. This also includes one extra of every value. So at least I'll have everything on hand if I need to replace a resistor.
I'm also considering replacing the shielded cable that runs from pin 3 of the 7X7 tube to the .006uF cap attached to the wiper on the volume control. I suspect this is just plain old shielded cable, right? Or does it need to be some specific impedance?
Thanks,
Rich