Vintage Magnavox 7t5003 Portable TV

[Robb]

Just turned the TV on tonight. The tubes inside are really bright and get hot !
Works like a charm, but the VHF channel knob is worn inside the plastic, so it doesnt change channels good. Keeps turning.
Anyone got a spare ?

[Jon A.]

With a 1.1 amp draw? Think of what you could save on heating bills!

Seriously though, better leave it off until someone with more knowledge on this can chime in, before any damage is done.

[Robb]

Originally Posted by KV-1926R

Seriously though, better leave it off until someone with more knowledge on this can chime in, before any damage is done.

What damage can occur ?
I mean it's lasted over 40 years now... !

[Jon A.]

Oh, I was just guessing that tubes aren't supposed to run that hot, considering that you seemed surprised about it. Maybe it's been sitting for a long time and something went out of whack during that time?

All things considered, very nice portable.

[Robb]

Originally Posted by KV-1926R

Oh, I was just guessing that tubes aren't supposed to run that hot, considering that you seemed surprised about it. Maybe it's been sitting for a long time and something went out of whack during that time?

All things considered, very nice portable.

Im probably gonna take it in to a shop and get the switches cleaned an try and repair the channel changer knob..

[dieseljeep]

Originally Posted by Robb

Im probably gonna take it in to a shop and get the switches cleaned an try and repair the channel changer knob..

Take the cover off and see how many tubes are in it. The more tubes, the more heat will be produced!
If there is only a few tubes, it is a strong possibility, it has a diode heater voltage drop. It should be noted on the tube location diagram. If the diode is shorted, the tubes will receive full line voltage.

[Robb]

I went to my local TV repair shop that has been in business since 1969 and they had and original extra VHF knob for it.
The one that was on the magnavox was worn inside and was just spinning. Total fluke !

If anyone needs vintage parts for thier sets, contact John at 416) 762-5751
American Electronics Service - 3058 Dundas St W. Toronto Canada
He said he has a warehouse full of vintage parts and radios and TV sets.

[Robb]

Here's a video of this set:

http://www.youtube.com/watch?v=vGZ2nJPvweo

[Robb]

Updated pics