Just picked up a RCA 65v1 thought I would dabble with a possible repair. Unit powers up but radio does not work. Three glass tubes are lit. Swithed the dail to phono tried rubbing finger on needle to see if maybe I could get something out of the speaker nothing out of speakers with radio and phono. Unit does power up but not sure if maybe volumn swith may be problem. I know it could be a thousand things but hoping someone could shoot me in the right direction. Thanks Jim

From what you are saying it sounds like at least the filaments are good if this set is wire filaments in series. You are correct many things could be wrong. The first thing is to see what is happening with current draw, in my opinion. I have a setup with an AC Ammeter so I can monitor the current draw. It is always a bad sign when it slowly starts to creep up after initial surge.

It is good to check the sets tubes out on a tube checker. It is also good to clean the pins and sockets with some safe solvent. Caps are another big failure point. A simple ohmmeter check of all caps for shorts is a good start. Of course at times they can check low but still be OK as wired in circuit so it is good to remove one lead and then check. Many times there is a strong hum caused by leaking electrolytic capacitors and it is good to check them. But you have no sound and that could men a bad output stage but first check the power supply and see if there is any ripple and the levels are good to all tubes. Try that and get back.

Edward

:Just picked up a RCA 65v1 thought I would dabble with a possible repair. Unit powers up but radio does not work. Three glass tubes are lit. Swithed the dail to phono tried rubbing finger on needle to see if maybe I could get something out of the speaker nothing out of speakers with radio and phono. Unit does power up but not sure if maybe volumn swith may be problem. I know it could be a thousand things but hoping someone could shoot me in the right direction. Thanks Jim

Jim, can you point us to a schematic? I see a model 67V1 and a 65U1 listed under "Resources," but no 65V1. Here's the schematic for the 67V1 (a console with a record changer): http://www.nostalgiaair.org/PagesByModel/088/M0015088.pdf

And here's the chassis for the 65U1: http://www.nostalgiaair.org/PagesByModel/062/M0015062.pdf

Does either schematic match your set? If so, there are voltages shown on the schematic that you can use for trouble shooting. The 65U1 doesn't have a phono, so that doesn't seem to match your set.

You said that three tubes lit up? What about the others? You can pull tubes, and check across the heater pins with an ohmeter - should be a few ohms. If the heaters are OK, then I would check the plate voltages.

My first guess would not be the volume control.

The Model 67V1 is a rather complicated set - AM, shortwave, and push-pull output tubes.
Doug

: But you have no sound and that could men a bad output stage but first check the power supply and see if there is any ripple and the levels are good to all tubes. Try that and get back.
:
:Edward
:
::Just picked up a RCA 65v1 thought I would dabble with a possible repair. Unit powers up but radio does not work. Three glass tubes are lit. Swithed the dail to phono tried rubbing finger on needle to see if maybe I could get something out of the speaker nothing out of speakers with radio and phono. Unit does power up but not sure if maybe volumn swith may be problem. I know it could be a thousand things but hoping someone could shoot me in the right direction. Thanks Jim

Doug/Jim,
I recently restored RCA 67V1, and found most of the wiring was cloth insulated except the filament string, which was severely deteriorated rubber. I started by doing unpowered DMM tests of all power supply components. A brief powered test (successful), was performed with all tubes removed except the rectifier, then re-capping/rewiring before any further powered test were done.

marv

:Jim, can you point us to a schematic? I see a model 67V1 and a 65U1 listed under "Resources," but no 65V1. Here's the schematic for the 67V1 (a console with a record changer): http://www.nostalgiaair.org/PagesByModel/088/M0015088.pdf
:
:And here's the chassis for the 65U1: http://www.nostalgiaair.org/PagesByModel/062/M0015062.pdf
:
:Does either schematic match your set? If so, there are voltages shown on the schematic that you can use for trouble shooting. The 65U1 doesn't have a phono, so that doesn't seem to match your set.
:
:You said that three tubes lit up? What about the others? You can pull tubes, and check across the heater pins with an ohmeter - should be a few ohms. If the heaters are OK, then I would check the plate voltages.
:
:My first guess would not be the volume control.
:
:The Model 67V1 is a rather complicated set - AM, shortwave, and push-pull output tubes.
:Doug
:
:: But you have no sound and that could men a bad output stage but first check the power supply and see if there is any ripple and the levels are good to all tubes. Try that and get back.
::
::Edward
::
:::Just picked up a RCA 65v1 thought I would dabble with a possible repair. Unit powers up but radio does not work. Three glass tubes are lit. Swithed the dail to phono tried rubbing finger on needle to see if maybe I could get something out of the speaker nothing out of speakers with radio and phono. Unit does power up but not sure if maybe volumn swith may be problem. I know it could be a thousand things but hoping someone could shoot me in the right direction. Thanks Jim