Duncan's 1960 Magnavox

[Mr.Duncan]

Still digging into the vertical issue. Removed the chassis, triple checked all capacitors, re-did all the solder points to be safe.

Swapped out both Vert OSC (6BF6) and Vert Output (6DT5) with some good NOS tubes.

Replaced R50 with a new resistor.

Still got vertical collapse. - I guess I could work backwards from 6DT5?

Set the line voltage to 117v AC.

When checking 6DT5 I got the following voltages:

1. Pin# 1 280.1v (spec is 275)
2. Pin# 7 20.52v (spec is 20v)

PXL_20240818_023303382 by Thomas Duncan, on Flickr

PXL_20240818_023131537 by Thomas Duncan, on Flickr

PXL_20240818_023143176 by Thomas Duncan, on Flickr

tube by Thomas Duncan, on Flickr

PXL_20240818_023948540 by Thomas Duncan, on Flickr

PXL_20240818_024008008 by Thomas Duncan, on Flickr

PXL_20240818_023359388 by Thomas Duncan, on Flickr