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#511
10-01-2022, 06:31 PM
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Quote:
As mentioned above, this set does not have a horizontal efficiency/linearity coil to adjust, so where the cathode current can be measured, there is no way to adjust it on this. and yes AGC problems are rare, they do happen, bit in this case, it's more likely the IF alignment is messed up.
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=^-^= Yasashii yoru ni hitori utau uta. Asu wa kimi to utaou. Yume no tsubasa ni notte. いとおしい人のために 
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#512
10-01-2022, 06:50 PM
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Tomorrow I’m going to check resistances on the 6hs8 according to sams. when I had this running the agc control on the rear turning both ways made no difference at all but the noise gate did I do get video but it is distorted but can see images so since making k1 will see what this does. There is a .4 v rf source to agc if that’s missing from the tuner I don’t know what the consequence is if that’s not there.
Last edited by timmy; 10-01-2022 at 07:01 PM.
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#513
10-02-2022, 10:47 AM
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Checked resistances on 6hs8 they are all wrong even with the couplet I made up tried it anyway and it seemed to make it worse. I don’t know if the couplet all together would have to be potted I did incapsulated it in heavy heat shrink.
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#514
10-02-2022, 01:04 PM
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I don’t think that the potting is important. jr
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#515
10-02-2022, 02:14 PM
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My mistake I had to measure from x2 not x1 and it turns out they are all good. But the voltages are not right at all 6hs8 pins 6-145v 114 7-200 119 3-2.5 8.3 8-230 143 9-140 31 2- 275 1-190
Last edited by timmy; 10-02-2022 at 02:42 PM.
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#516
10-03-2022, 05:47 PM
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jr
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#519
10-04-2022, 07:40 AM
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He has this. http://www.instrumart.com/assets/uei...nix-manual.pdf Again, a better meter is suggested before believing any voltage readings, one that is known to be 10m, as the one on hand may be loading the circuit down.
__________________
=^-^= Yasashii yoru ni hitori utau uta. Asu wa kimi to utaou. Yume no tsubasa ni notte. いとおしい人のために
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#521
10-04-2022, 01:41 PM
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https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1 10 megohm input impedance (I have measured mine). 10 amp DC range. No auto range (no confusion). Inexpensive @ $12.50 (no tears if you break it). not affiliated, jr
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#522
10-04-2022, 01:45 PM
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 plus 2 other "disposable" types of the same price range. 
__________________
=^-^= Yasashii yoru ni hitori utau uta. Asu wa kimi to utaou. Yume no tsubasa ni notte. いとおしい人のために
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#523
10-04-2022, 05:43 PM
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Sounds like you guys won’t be happy until I buy a cheapy dvm or something from the early 60s. This dvm repaired many tvs. And the cap checker is priceless. I used to use a fluke 77 series and this I use now is better then that.
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#524
10-04-2022, 06:28 PM
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Quote:
http://suzaku.live-evil.org/1004221812.jpg what I and many other are saying is that the clamp meter you have is not 10m impedance, and that is quite important when it comes to tube stuff, there is a 90% chance that your voltage measurements are being skewed because of this. $12.50 is a good investment to double check that you are being told correct voltage info with a meter KNOWN to be 10m, that both I and jr_tech have used, and I can say for a fact it gives readings on par with the Fluke.
__________________
=^-^= Yasashii yoru ni hitori utau uta. Asu wa kimi to utaou. Yume no tsubasa ni notte. いとおしい人のために
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Linear Mode
