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-   -   " E " waste find (http://www.videokarma.org/showthread.php?t=254067)

radio nut 04-20-2012 03:09 PM

" E " waste find
 
I found a small portable plastic cabinet sears color tv at a recycle center. It is tubed and in nice shape. I did not have my phone so no pics or glasses so I have no idea what model it is. Ok I did notice that the brightness is all the way clockwise so I am assuming all the way up. Yes someone may have messed with it but if it was turned all the way up when running is that automatically scream bad crt or could a tube cause that? All the tubes I could see had sears written on them. For $25.00 is it worth a shot ?

ctc17 04-20-2012 03:18 PM

Yes grab it. Table top tube sets are kinda scarce these days

radio nut 04-20-2012 03:36 PM

So a tube besides the crt could cause possible low brightness ?

WA3WLJ 04-20-2012 03:40 PM

ry8h128dyw

ctc17 04-20-2012 03:45 PM

Lots of things can cause dim. The screens are all the way up or the knob on the front? Some small sets like the porta colors call for running the screens wide open so its hard to tell. $25 is nothing, that won't even buy a tank of gas so its not big money.
I have had sets you would sware had bad crts and it turned out to be bad grid caps in the grids of the driver tubes. Its just real hard to tell without a proper test.

radio nut 04-20-2012 03:52 PM

The brightness knob on the front is all the way up ( I am assuming since it was already fully clockwise). It is on a shelf of tv's at the e-waste place that are for sale so one of the guys could have been messing with it, who knows. My concern of course is getting it home and having a really weak crt because that might put it out of my current ability to fix financially. But a tube now and then and caps here and there is cheap enough. So I will give it a shot, thanks.

radio nut 04-20-2012 04:07 PM

1 Attachment(s)
here is a internet picture that looks just like the one I will be picking up.

Eric H 04-20-2012 04:58 PM

Hmm, looks like a Panasonic, Sanyo made sets for Sears also.

radio nut 04-20-2012 05:29 PM

As long as no one else gets it before I do I will post pics and model number. Would panasonic or Sanyo been the better of the two manufacturers?

Sandy G 04-20-2012 06:20 PM

Kinda like the difference between Ford & Chevy, I'd think. Panasonic's bigger, but I'd happily grab either one...

radio nut 04-20-2012 07:03 PM

I'd feel a little better if when I grabbed the brightness control and turned it , it had room both ways. I guess I already Knew that anything can cause a dim picture but I really , really... want a tube color set.I probably should have just asked for opinions about the price and rarity of these sets.

I did have a ctc5d along time ago but I realized that I have no clue how to set up purity, and convergence and was in over my head so I gave it free to a member here.So I will grab this set and put in caps, check resistors and go from there with my fingers crossed . I have done 5 black and white tv's so I "should" be ok. I do not have a tube tester that can handle compactrons so this might be interesting

bluenorm 04-20-2012 07:28 PM

that is a Toshiba and it was my first color tv (1971) it was gift from my aunt. It cost her $260.00 and change. lasted until 1985. only one repair.

bluenorm 04-20-2012 07:33 PM

it does have an instant switch in the back.there is another switch in the back but i do not remember the purpose. the warranty sticker was place in the back of the set with the date of delivery.

radio nut 04-20-2012 07:36 PM

Instant switch ? what is that ?

radio nut 04-20-2012 07:37 PM

Did it have a decent picture?

bluenorm 04-20-2012 07:52 PM

the instant on keeps the crt on at low voltage, thus you do not have to wait to long for the set to come on.I was the first in the my school having your own color tv. three guns picture tube, nice color. my mother told me that the picture went green and dim, and she put it the garbage with out telling me.

bluenorm 04-20-2012 08:00 PM

radio nut are you coming to NYC any time soon? lets make a deal!

radio nut 04-20-2012 09:01 PM

Interested in this set huh ?

bgadow 04-20-2012 09:15 PM

I have a Sears and a couple Wards smallscreen color sets from that era and they are unimpressive, not as good a picture as a Portacolor in my opinion. But this one looks a step up from what I have and might be alright. A good save, no matter what.

radio nut 04-20-2012 09:21 PM

One thing I thought was neat is the hue is a slider control and the rest normal rotary pots.

miniman82 04-20-2012 10:14 PM

This really belongs in the square forum, not to be picky but it's too 'new' to be considered early color.

radio nut 04-20-2012 10:40 PM

Once I get it, I will start new thread there. I realized too late where it should be.

miniman82 04-20-2012 11:13 PM

Don't worry about it, one of the mods will probably see this and move it for you.

Eric H 04-20-2012 11:40 PM

Quote:

Originally Posted by miniman82 (Post 3032982)
Don't worry about it, one of the mods will probably see this and move it for you.

At your service. :yes:

Electronic M 04-20-2012 11:56 PM

These off brand table sets (especially the rebadged imports) are VERY rare. Had that shown it's self here in WI for that price I'd have a hard time leaving the store without it even if the picture was too dim to watch.

radio nut 04-21-2012 10:56 AM

ok, so its a good risk, monday it will be mine !

radio nut 04-23-2012 01:59 PM

4 Attachment(s)
Ok, Got the set and put it on a variac and powered it up slowly.

In my town we have two stations that still broadcast analog. picked up both but not crystal clear.

So far all of the tubes I have checked are sears and good except for the high voltage rectifier which was solid state.

The crt tests good no shorts/gas at blue 800 green 800 red 780.

The brightness is all the way up but witha good crt I am not worried. I will get a sams now and go to work.

What is the "killer" adjustment for?

radio nut 04-23-2012 02:01 PM

1 Attachment(s)
this is a picture taken from my phone and then retaken on a camera just to show I did get a picture on the set.

I was equally happy that it came up "locked"the first time.
yes the quality of this pic is crap!

Sandy G 04-23-2012 02:05 PM

See yr in Lima...Ever get down to Fair much ?

radio nut 04-23-2012 02:21 PM

That is where I variac'd the set.
I used to work there as a second job. after I quit officially working there I used to go in and fix tube testers or do manual labor to help out.

because of that the owner is allowing me to use extra shop space to calibrate my capehart radio and bring the tv in to tear apart and check tubes and small things like that.

Electronic M 04-23-2012 02:24 PM

Killer is probably short for color killer, which is a circuit that looks for the color synchronizing "burst", and if it is below a level specified by the color killer adjustment will turn off the color demodulating circuits (to prevent color noise on monochrome programing). The color killer circuit is not as useful today as it was then because TV stations not only less frequently broadcast monochrome programs, but they also tend to leave the burst going on the monochrome stuff they do broadcast thus giving the circuit little to do. If you want to kill the burst on monochrome shows then there are ways of removing the burst with readily available hardware (anything that outputs component or S-video is a candidate for being the hardware).

Looks like ya, done real good on that set.

radio nut 04-23-2012 02:30 PM

I am real nervous because I have done black and white sets but not a color set. I do not know what it is I need to know above the black and white "level".

So I will go slow and put in new electro's and check everything out voltage wise and hopefully don't need to adjust anything else.

radio nut 04-23-2012 03:05 PM

What do I use to clean the tubes that will not remove the sears logo. Normally I just clean them with windex.

holmesuser01 04-23-2012 03:15 PM

Try to dust off the top of the tubes. The Sears logos will come off if the windex hits them.

562. model is Toshiba.

Jeffhs 04-23-2012 03:47 PM

Quote:

Originally Posted by radio nut (Post 3033229)
What is the "killer" adjustment for?


Your TV must be a color set, as there is no "killer" control on b&w sets.

It has been some time since I worked with analog color TVs, so I am going by what I remember. Analog CRT color TVs had what was known as a "color killer" circuit, which shut off the color processing chain in the TV when a black-and-white show was being telecast. If the killer is misadjusted or inoperative, color interference will appear in b&w pictures. The killer adjust potentiometer regulates the point at which the color killer starts to work. If the control is set too high, it will firmly cut off the color processing circuits, resulting in a b&w picture even on known color programs; if too low, color interference will appear in known monochrome (black and white) pictures. The correct setting is that at which the color interference just disappears from the picture, which will ordinarily be at or near the center of the control's range.

radio nut 04-23-2012 04:41 PM

Last question for now ( I hope).
There is a switch on the back labled " kine bias ".
OK I assume that means crt bias. Is it a good idea not to mess with that?

holmesuser01 04-23-2012 04:44 PM

Leave it alone for now. You will mess up your B/W picture tracking.

radio nut 04-24-2012 01:57 PM

Can someone look up the sam's set/ folder please. it is a sears model 562. I have access to sams but not the master index. Thanks!

sanjarali 04-24-2012 02:57 PM

The is television of lower castes and very common. In when I was my young this is television found in rubbish piles outside of the city square. :banana: you televison make me feel very lucky and young in the before. :music: I hope that you will hold it gentlly and add love. Please make picture after you restore and add digital switches!! :music::music:

radio nut 04-24-2012 03:34 PM

I will keep posting progress but what did you mean by adding digital switches ?


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