#67 Eico 315 SG repair and alignment

[Radio Tech]

In this video I have a look at multiple problems with the Eico 315 signal generator. Then replace capacitors, resistors and do an alignment.

[voltz]

Another fine repair.
Was that red wire actually loose when you moved it or was it just shifting frequency as you went near it? Working on a harmonic i can imagine it was critical, but it looked like a dry joint in the video.

Thanks!

[Radio Tech]

Another fine repair.
Was that red wire actually loose when you moved it or was it just shifting frequency as you went near it? Working on a harmonic i can imagine it was critical, but it looked like a dry joint in the video.

Thanks!

Although I did remove the old solder and re-solder the connection, I saw no problem with it.
The problem was the wire was just too close to the other coils and trimmers.
This is why it is always best to try and keep stuff routed per the assembly manual.

Thanks for watching.

[German_EE]

I like that copper plated chassis  A rather large soldering iron would be needed to make a connection but it looks much nicer than steel or aluminum. What amazes me though is that something works at RF with all those long wires, I was always taught that connections at RF should be as short as possible.

[Radio Tech]

I like that copper plated chassis  A rather large soldering iron would be needed to make a connection but it looks much nicer than steel or aluminum. What amazes me though is that something works at RF with all those long wires, I was always taught that connections at RF should be as short as possible.

Yep, takes a big iron to heat that chassis.
Agreed on the long wires. Amazing what they could design and make work back then.