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Old 10-29-2019, 07:07 PM
vortalexfan vortalexfan is offline
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Join Date: Sep 2018
Location: Northern Indiana
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OK so I figured out two of my problems that had cropped up, the issue with the smoking tuner was the tube I was using in my tuner, the 6AG5 tube of the tuner (which I didn't have any of to put into the tuner when I got the TV because that was one of the many tubes that was missing in the TV when I got it) was substituted out for a 6AK5 (which my tube substitution guide told me that was an appropriate substitute for a 6AG5 tube) but apparently the 6AK5 in this situation wasn't an appropriate sub for the 6AG5 as I think it was pulling more current than the tuner circuit could handle because once I swapped out the 6AK5 with a 6CB6 the tuner didn't smoke anymore.

As for the arcing power switch it was the rectifier tube I was using because I was trying some different 5U4 tubes in the TV and apparently the 5U4 tube I had stuck into the TV had some issues with it that only showed up when it was in circuit because when I stuck another 5U4 tube in the circuit the power switch stopped arcing.

but then yet another issue popped up, and it was in the audio circuit, R62, a 390 Ohm 1 watt resistor suddenly started smoking, and I'm not sure why, but I did have a raster on the screen of the TV just before I noticed the smoke from this resistor which I then promptly shut off the TV.

I did measure the 390 Ohm resistor and it measured extremely out of tolerance, it measured .475k Ohms which when I went to measure it in ohms it just measured O. L. on my multimeter.

I don't have any 390 Ohm 1 Watt resistors but I do have a 330 Ohm 1 Watt resistor, would that work, in place of the 390 Ohm resistor?

I did check and the resistor tolerances in the TV are 20% and 330 ohms is within the 20% tolerance of the original part.
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