12-08-2021, 02:32 PM
Work continues on the HQ-129-X. Somebody replaced the volume control with an incorrect part. I have ordered a proper potentiometer with switch from Mark Oppat. I replaced the two condensers inside the BFO can, but have left others in that area until I get the potentiometer.
[Image: https://64.media.tumblr.com/1774c9eb8860...539647.jpg]
I have gone on to replace most of the rest of the paper condensers. There are a few on the side of the chassis away from the power transformer, choke, and output transformer which are a bit tricky since three condensers are mounted between two terminal strips to which are attached several resistors. There are two places where they did this. Being careful, this was not too difficult. All 6 of these condensers were .02 MFD, 600 volt. Hammarlund seems to have used .02 MFD condensers in most places where other manufacturers would use a .01 MFD.
[Image: https://64.media.tumblr.com/300ad48af7e6...f138c8.jpg]
Here is a view of the whole underside of the chassis as it stands. I won't be able to do much more until I get the parts I have ordered.
[Image: https://64.media.tumblr.com/0fda51aab224...31b41d.jpg]
YES, that is a blown up .05 MFD 600 VDC condenser, bottom, near the center. It was one of the ones going between each side of the power input and chassis ground. Its replacement is one of the parts I am waiting for. I don't have any .05 MFD safety condensers.
[Image: https://64.media.tumblr.com/1774c9eb8860...539647.jpg]
I have gone on to replace most of the rest of the paper condensers. There are a few on the side of the chassis away from the power transformer, choke, and output transformer which are a bit tricky since three condensers are mounted between two terminal strips to which are attached several resistors. There are two places where they did this. Being careful, this was not too difficult. All 6 of these condensers were .02 MFD, 600 volt. Hammarlund seems to have used .02 MFD condensers in most places where other manufacturers would use a .01 MFD.
[Image: https://64.media.tumblr.com/300ad48af7e6...f138c8.jpg]
Here is a view of the whole underside of the chassis as it stands. I won't be able to do much more until I get the parts I have ordered.
[Image: https://64.media.tumblr.com/0fda51aab224...31b41d.jpg]
YES, that is a blown up .05 MFD 600 VDC condenser, bottom, near the center. It was one of the ones going between each side of the power input and chassis ground. Its replacement is one of the parts I am waiting for. I don't have any .05 MFD safety condensers.
![[-]](https://philcoradio.com/phorum/images/bootbb/collapse.png "[-]")
