1971 Curtis Mathes tube type color set - Page 2 - Videokarma.org TV - Video

Chad Hauris · #16 09-07-2011, 06:42 PM

Thanks for watching the video, I'm going to set up a TV viewing area in this room and bring in some more sets including the RCA CTC-16 round set which is in storage.
I have looked through old Sears and Wards catalogs and saw the huge difference in price in round color sets. The cheapest in an ebony finish metal cabinet is hundreds of dollars less than the most expensive. The only features it lacks of the most expensive set are a degausser and maybe an additional speaker.
I have one of these "cheapest" round sets and I think it looks very nice with the black metal finish, better than the some of the more "frou frou" sets.

DaveWM · #17 09-07-2011, 08:34 PM

good video, you are right that is a nice chassis. Interesting they used the
6BQ5 and not a 6AQ5. My predicta is like that, would not expect a 6BQ5 but that is what it has. did you just try a new tube for the audio?

Chad Hauris · #18 09-08-2011, 11:10 AM

I'm going to start by putting on the test adaptor into the 6BQ5 socket and checking the voltages...I don't think it's a tube-related problem but I will check it just to make sure. The rest of the audio circuit is solid state (IC and transistors). That is the only solid-state part of the set. I may just install a 6AV6 triode as a pre-amplifier and convert the audio input to external only if the IC circuitry is bad as it will always be used with an external audio/video input

zenith2134 · #19 09-09-2011, 09:50 AM

Die spamming scum!!!:thmsdn:

Electronic M · #20 09-09-2011, 08:07 PM

You can help kill spammers by pressing the red outlined triangle in the upper right hand corner next to the post number. That triangle is the report post button for spam and the like. Now you should once more be "on the beam".

zenith2134 · #21 09-09-2011, 08:27 PM

Yes, Mr. Electronic-M, perhaps my explosive & angry comment above was hastily posted. BTW 'On the Beam' --for the 80s fans it was a stellar Space Monkey song and album from 1985. (substitute 'atrocious' for 'stellar' if you don't enjoy 80s music).

Electronic M · #22 09-10-2011, 12:02 PM

Zenith2134, I thought that post was pithy rather than hasty. I believe that on this forum once someone reports a post it can on longer be reported by anyone else (though I may have this site confused for ARF no that) so when I promptly reported that post after reading your comment I assumed that you did not report it, and figured I'd inform you how to snipe spammers incase you did not know.

I'm not familiar with the names of most 80's tunes (it was a bit before my time), but do like SOME of the music of that time ( I'm really more of a Big Band/ Swing enthusiast).

Tom C.

zenith2134 · #23 09-10-2011, 12:59 PM

Got it. I didn't know how to report posts in fact. I never did in my life! And hopefully never will. So you like Big Band/Swing? Scored a mint copy of Elmer Bernstein's Staccato stereo LP...2nd copy...my grandparents used to listen to this LP all the time when I was growing up...not my thing but it IS good stuff.

Electronic M · #24 09-10-2011, 07:52 PM

Well it is good for the VK community to report spam posts. I try report any spam I see as soon as I see it becaues if someone don't report spam when a bunch of spammers get in (as was just the case) they can mess up the site much more and make it much more of a chore for the moderators to fix.

In short spammers on a forrum are like grafiti "artists"(for lack of a better word) in a neighborhood... the longer one takes to lock them up the more buildings that must be repainted, and as members we should try to act as the neighborhood-watch-group to aid the moderators who play the role of the police here. As members we should all act to keep our community clean, safe and friendly. (climbes down from soapbox)

Never heard of Elmer Bernstein before, but from what a quick net search yielded I now want to search the local thrifts for some of his albums. Thanks for mentioning him I'm always on the look out for discs I don't have and new(to me) artists.

Sorry for going off the threads original topic (I try to avoid that too).

Tom C.

dieseljeep · #25 09-12-2011, 10:17 AM

Quote:

Originally Posted by Chad Hauris

I'm going to start by putting on the test adaptor into the 6BQ5 socket and checking the voltages...I don't think it's a tube-related problem but I will check it just to make sure. The rest of the audio circuit is solid state (IC and transistors). That is the only solid-state part of the set. I may just install a 6AV6 triode as a pre-amplifier and convert the audio input to external only if the IC circuitry is bad as it will always be used with an external audio/video input

Getting back to the original issue at hand, I ran into the same problem with the same chassis. I found a resistor that changed value. It decreased in value. It was the resistor that dropped the B+ supply to the IC and transistor. It ended up destroying the IC. This is probably 25 years ago. The IC was an RCA, so maybe other sets used it as well.

Electronic M · #26 09-12-2011, 07:41 PM

If new ICs can be had I'd put a zenier diode in to prevent any future power supply resistor failure from taking out the IC again.