This is on my RCA International (9-INT-2). The AM and SW were working, but with a bad hum from an HK short in the 6AK8. While I had the chassis out to do some cleaning, something must have opened, because now I can only get 1 AM station, and it is very faint. Nothing at all on the SW bands. With the new 6AK8 in place, there is a very slight hum on AM and SW, but no hum on phono, and FM is clean. I can't find any obvious breaks, and when I place another set next to this one, I can find the oscillator. Any ideas where to look?

Jon

:This is on my RCA International (9-INT-2). The AM and SW were working, but with a bad hum from an HK short in the 6AK8. While I had the chassis out to do some cleaning, something must have opened, because now I can only get 1 AM station, and it is very faint. Nothing at all on the SW bands. With the new 6AK8 in place, there is a very slight hum on AM and SW, but no hum on phono, and FM is clean. I can't find any obvious breaks, and when I place another set next to this one, I can find the oscillator. Any ideas where to look?
:
:Jon
:

As a follow-up to my own message:
I've gone through all the tube sockets, and took a bright-boy to the tube pins. Everything shines, but no difference. If I touch my pliers to the non-grounded side of the ferrite antenna (and the FA key is down on the bandswitch), I get stations, but the take away the pliers and there's nothing. I can replicate this all the way back to the AM Mixer, so the bandswitch is okay. I'm still not getting enough signal to move the eye tube, though. Before I lost the AM and SW section, I had excellent eye action and lots of sensitivity using the FA antenna. I'm wondering if operating the set with the bad 6AK8 opened something further up the chain, but can't seem to figure out where the problem is. I should have a signal generator later in the week to aid in the troubleshooting.

Do the symptoms point to a problem with the IF amps or an AVC problem?

Jon

::This is on my RCA International (9-INT-2). The AM and SW were working, but with a bad hum from an HK short in the 6AK8. While I had the chassis out to do some cleaning, something must have opened, because now I can only get 1 AM station, and it is very faint. Nothing at all on the SW bands. With the new 6AK8 in place, there is a very slight hum on AM and SW, but no hum on phono, and FM is clean. I can't find any obvious breaks, and when I place another set next to this one, I can find the oscillator. Any ideas where to look?
::
::Jon
::
:
:As a follow-up to my own message:
:I've gone through all the tube sockets, and took a bright-boy to the tube pins. Everything shines, but no difference. If I touch my pliers to the non-grounded side of the ferrite antenna (and the FA key is down on the bandswitch), I get stations, but the take away the pliers and there's nothing. I can replicate this all the way back to the AM Mixer, so the bandswitch is okay. I'm still not getting enough signal to move the eye tube, though. Before I lost the AM and SW section, I had excellent eye action and lots of sensitivity using the FA antenna. I'm wondering if operating the set with the bad 6AK8 opened something further up the chain, but can't seem to figure out where the problem is. I should have a signal generator later in the week to aid in the troubleshooting.
:
:Do the symptoms point to a problem with the IF amps or an AVC problem?
:
:
:Jon
:

:::This is on my RCA International (9-INT-2). The AM and SW were working, but with a bad hum from an HK short in the 6AK8. While I had the chassis out to do some cleaning, something must have opened, because now I can only get 1 AM station, and it is very faint. Nothing at all on the SW bands. With the new 6AK8 in place, there is a very slight hum on AM and SW, but no hum on phono, and FM is clean. I can't find any obvious breaks, and when I place another set next to this one, I can find the oscillator. Any ideas where to look?
:::
:::Jon
:::
::
::As a follow-up to my own message:
::I've gone through all the tube sockets, and took a bright-boy to the tube pins. Everything shines, but no difference. If I touch my pliers to the non-grounded side of the ferrite antenna (and the FA key is down on the bandswitch), I get stations, but the take away the pliers and there's nothing. I can replicate this all the way back to the AM Mixer, so the bandswitch is okay. I'm still not getting enough signal to move the eye tube, though. Before I lost the AM and SW section, I had excellent eye action and lots of sensitivity using the FA antenna. I'm wondering if operating the set with the bad 6AK8 opened something further up the chain, but can't seem to figure out where the problem is. I should have a signal generator later in the week to aid in the troubleshooting.
::
::Do the symptoms point to a problem with the IF amps or an AVC problem?
::
::
::Jon
::I have just aquired one of these and was wondering if you have found the solution.

Jon, sounds like the oscillator coil has opened up..., check to see that while you had the chassis out that you did'nt accildently break one of the fine wires on this coil.
just a suggestion.
E.
::::This is on my RCA International (9-INT-2). The AM and SW were working, but with a bad hum from an HK short in the 6AK8. While I had the chassis out to do some cleaning, something must have opened, because now I can only get 1 AM station, and it is very faint. Nothing at all on the SW bands. With the new 6AK8 in place, there is a very slight hum on AM and SW, but no hum on phono, and FM is clean. I can't find any obvious breaks, and when I place another set next to this one, I can find the oscillator. Any ideas where to look?
::::
::::Jon
::::
:::
:::As a follow-up to my own message:
:::I've gone through all the tube sockets, and took a bright-boy to the tube pins. Everything shines, but no difference. If I touch my pliers to the non-grounded side of the ferrite antenna (and the FA key is down on the bandswitch), I get stations, but the take away the pliers and there's nothing. I can replicate this all the way back to the AM Mixer, so the bandswitch is okay. I'm still not getting enough signal to move the eye tube, though. Before I lost the AM and SW section, I had excellent eye action and lots of sensitivity using the FA antenna. I'm wondering if operating the set with the bad 6AK8 opened something further up the chain, but can't seem to figure out where the problem is. I should have a signal generator later in the week to aid in the troubleshooting.
:::
:::Do the symptoms point to a problem with the IF amps or an AVC problem?
:::
:::
:::Jon
:::I have just aquired one of these and was wondering if you have found the solution.