Old Muntz TV for sale Locally to me, Should I pick it up?

[Kevin Kuehn]

Originally Posted by vortalexfan

Well I was able to get a nice bright full picture but then it went dark and I'm unable to see anything on the screen anymore but I can still hear the sound from the signal source.

Unfortunately I'm afraid that 1 Meg 1 Watt resistor that was in series with the high voltage anode to the picture tube might of finally bit the dust as no amount of adjusting the ion trap is bringing back the picture, and I think the resistor was slowly dying because I started out with a super bright picture and it gradually got dimmer until it finally went completely dark.

So you've completely lost high voltage, as in no more sparky?

Easy enough to change that resistor, I suppose?

[Electronic M]

Originally Posted by Kevin Kuehn

So you've completely lost high voltage, as in no more sparky?

Easy enough to change that resistor, I suppose?

If the resistor don't return the HV then check for arc at top of the 1B3 and if not there check voltages at the socket of the H output tube.

[vortalexfan]

Originally Posted by Electronic M

If the resistor don't return the HV then check for arc at top of the 1B3 and if not there check voltages at the socket of the H output tube.

The 1B3 still arcs at the top, so I'm suspecting it's definitely that resistor inline with the High Voltage anode for the picture tube.

[vortalexfan]

Originally Posted by Kevin Kuehn

So you've completely lost high voltage, as in no more sparky?

Easy enough to change that resistor, I suppose?

Well actually I managed to get the High Voltage back, and all I did was swap out the horizontal output tube back to the original Meck branded one that was in there when I got it. But the picture still can't go very bright without having vertical retrace lines on it or the screen completely disappearing when the brightness is turned all the way up.

[Kevin Kuehn]

Originally Posted by vortalexfan

Well actually I managed to get the High Voltage back, and all I did was swap out the horizontal output tube back to the original Meck branded one that was in there when I got it. But the picture still can't go very bright without having vertical retrace lines on it or the screen completely disappearing when the brightness is turned all the way up.

Weird. I thought you'd solved that high voltage fading problem a couple pages back. The retrace lines are probably because you have the brightness cranked to full to compensate for low high voltage. If I were in your boots right now(actually a long long time ago)I'd replace that 1 meg 1watt series resistor just for peace of mind. Then go from there.

[Kevin Kuehn]

Found it back on post 315 where you solved that high voltage sage by replacing the HV rectifier tube. Had a nice and bright raster.

[vortalexfan]

Originally Posted by Kevin Kuehn

Weird. I thought you'd solved that high voltage fading problem a couple pages back. The retrace lines are probably because you have the brightness cranked to full to compensate for low high voltage. If I were in your boots right now(actually a long long time ago)I'd replace that 1 meg 1watt series resistor just for peace of mind. Then go from there.

I'm working on it, one of the members here is sending me a new resistor as well as the knobs I need for this set as well as some tubes.

[Kevin Kuehn]

Excellent.

[vortalexfan]

Originally Posted by Kevin Kuehn

Excellent.

Yes, I think right now because of that resistor being bad I think its causing my High Voltage to be too low to produce a decent picture, hopefully once I replace that resistor I should have adequate High Voltage to create a good picture again.

[old_coot88]

I'm hopin' to be proven wrong, but there's no way that replacing that resistor is gonna restore HV to the CRT anode.