Look what the dog dragged home

[Paul Knaack]

Originally Posted by DaveWM

looks like some hum or maybe ground loop effecting the pic. what is the video source?

*** For the color bars i was using the computer hooked to my Blonder Tongue. Other pics were antenna and digital stream dtv box.

for snow look at cleaning the tuner, removing the shield and q tips with contact cleaner. work carefully, you dont want to break wires to the tuner, nor do you want to just soak it. Some tuners have wafer switches others use the strips on a turret, those are easier.

Snow can also be a weak RF tube in tuner of a blown balun.

***6lj8 mixer osc. tube was shorted. Swapped balun.No change. Cleaned tuner and picture looked great.

turn the color down or get some black and white programming on, observe the quality of the pic. check for color fringing. check focus, little things slowly make a better pic.

get a cross hatch and check for linearity, use dots for center converge, cross hatch for edg convergence.

weak contrast can be a weak video out cathode bypass cap, but it looks pretty good to me.
***Yes contrast work great ever since I replaced the 6AF9 video output tube.

I would focus on proper setup (grey scale, degauss,linearity,purity, focus,converge). Don't expect it to get a lot better, hard to tell if the focus is off.

***Thanks Again, for the help.
Electronic M Since it appears you are using a computer as a video source I'd recommend installing VLC media player. It gets rid of that annoying under scan mode on video cards if you play the video full screen.
***Thanks, useing VLC media player would have worked better. Good idea for next time.


I agree on that being a decent picture for a set that has just been woken up. The vertical linearity/size might be off too far for the controls to compensate, but aside from that,
*** I havn't even touched any of the conrols on the back yet.
honestly I think that set is only a bunch of knob turns away from running as good as new...
***I think your right.
Marco-nix that's better hey !
BigDavesTV That's a cute little "Admir-a-ble" console, great score! Very nice picture for beginning, looks like a decent emission CRT, as well, congratulations, and best wishes on your restoration!
tvcollector Great work.. I love the picture so far.. A screen with Brian Williams in it, always makes for an excellent picture
***Thanks,
old_coot88 Oh waao. That is amazing. A virtually 'working as found' time-capsuled set.
There's a quick-and-dirty check that can assess the overall condition of critical tubes, the "7 seconds off" test.
With the set running and warmed up, turn it off for about 7 seconds, and then back on. Watch for slow width fill-out, slow H sync lock, slow vert fill, slow color lock-in, slow clearing snow etc. Borderline weak tubes will show up.
***Thanks for the tip,Seems pretty normal to my untrained eye. i'll put up a video if problems come up.

One question. Is the 6KD6 is holding steady at 200 ma., and not rising with brightness increase?

The reason for asking is - if the current does go up with brightness, it means the set uses Admiral's pulse-feedback HV regulation which historically was very trouble-prone.
But if it uses the traditional 6BK4 shunt regulator, no problemo.

***Current goes up with brightness and jumps around depending on image on screen. With snow on screen and brightness maxed it will go to exactly 260 ma. Any tips on keeping it from failing? Thanks for the help.