Junkyard tube swap

88mph

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The patient (a K4906 with the mother of all Ms. Pac burn):

DSC02848.jpg


The donor (an old Zenith TV from the local transfer station):

DSC02842.jpg


The monitor after the swap:

DSC02846.jpg


It fired right up! All the posts here about tube swaps and what type of TVs to look for really paid off--thanks to all who posted about tube swaps in the past.
 
Did you have to converge it?
 
Did you have to converge it?

Along with the lovely burn, this monitor needed convergence badly even before I swapped the tube. I don't think the convergence changed much, but like I said it was pretty far out to begin with.

This thing needs a cap kit too so I figured I would do that before getting too deep into the adjustments.
 
We seriously need to start a more in-depth cross-reference database with tube swaps. I am sure once we get it going and get a lot of information, tube swapping will become much more easier and fun.
 
I tried one before and could never get convergence right. I eventually gave up. Need to try another one soon though. Got a G07 with fresh caps, new flyback, and still taking awhile to warm up.
 
Now you need to find the relevant threads here discussing this and suck that information out of the threads and onto your website. :)
 
Here is a list of compatible Panasonic and JVC TVs and a couple others I snagged off another thread: (If you want to paraphrase this list, it basically lists all the Panasonic WT and CT series 19" TVs.)

Panasonic CT9041
Panasonic 7601US
Panasonic CT9051
Panasonic WT5931RW1
Panasonic WT5964SW1
Panasonic 7901US
Panasonic CT9060
Panasonic WT5931SW
Panasonic WT5965SH
Panasonic CT1910
Panasonic CT9071
Panasonic WT5932RW1
Panasonic WT5965SW
Panasonic CT1910M
Panasonic CT909
Panasonic WT5935SW
Panasonic WT5965TH
Panasonic CT9010
Panasonic CT958
Panasonic WT5960TW
Panasonic WT5965TW
Panasonic CT9021
Panasonic CT959
Panasonic WT5961SW
Panasonic WT5971SW
Panasonic CT9031
Panasonic TT5968SW
Panasonic WT5961TW
Panasonic WT5971TW
Panasonic CT9040
Panasonic WT5930RW1
Panasonic WT5962SW
Panasonic WT5972TP
Panasonic CT9041
Panasonic WT5930SW
Panasonic WT5963SW
Panasonic WT5975TP
Panasonic CT9050
Panasonic DFLTMDL
Panasonic DT909

JVC 7601US
JVC 7690US
JVC 7790US
JVC 7890US
JVC 7901US
JVC 7990US
 
Several second hand stores around here are not taking old tv's anymore do to the digital change over. Kinda sucks :(
 
Actually, that makes it easy. Place a cl ad asking for people's old TVs.

You should also drop by the local recycling center or landfill. I've stopped by our recycling center and they had tons of old tv's they would let me take. Now I have a list of models to look for!
 
I probably sound like a broken record but the "Place an ad on CL for TV's" is an awesome idea ... if you plan on using a Wei-ya chassis or the likes because most TV's (In my experience) you'll end up finding are going to be 8 pin. Yeah people claim certain years to look for and that didn't pan out for me either. You can easily go broke and end up with a shitpot of tubes that are useless to you if you refuse to use the aftermarket chassis route.

I do have to say if you go to a recycling company or a dump I would bet they would let you remove the back off the TV and get a tube part#. Shit they're going to smash it anyway like they'd care ;)

And it also raises an age old question - the lighter the phospher the worse the picture and the darker the better picture..........
right .... or wrong?
 
And it also raises an age old question - the lighter the phospher the worse the picture and the darker the better picture..........
right .... or wrong?

Well you would imagine so, ya. TVs dont have an endless supply of phosphor and eventually it will get dimmer and run low on phosphor to burn. Thats why people say not to use tubes that look brownish or cloudy. A nice darker newer tube will last years and years longer and give a better picture.
 
And it also raises an age old question - the lighter the phospher the worse the picture and the darker the better picture..........
right .... or wrong?

I think I have the answer to this one. Its the reason I chose the KLOV name that I did. My mom used to work for the Phillips tv company when they had a factory in my home town. The best models of their TVs used a black matrix tube. If I am not mistaken a TV is like a flourescnet light bulb. Ever bust a marquee bulb. They have a white coating. I think that is phosphur. The inside of the tube has a layer of phosphur as well. When the color guns hit the front of the tube, that spot glows for a short moment. But behind the phosphur coated glas is another part of the tube. Their is a metal matrix that resembles a very fine sieve or grating. I believe that was what makes the various tiny dots as the color guns scan across that matrix and eventually make up the picture(about 60 pictures a second). Most tubes have a matix that is grey. I have also seen green, white, and even brown once or twice. But the best tubes had black. I think they all did the same job in function, but black allowed for a better contrast ratio in the picture (like the black inking in a comic book to make the colors pop) The black matrix also blocks out more ambient light. Now, when you go buy an LCD flatscreen TV, you can actually shop for a unit with a higher contrast ratio which is why the best LCDs are dark flat black. I think the phosphor in a tube is white(or grey) in color, but a monitor that keeps repeating the same picture over and over will burn and fade the phosphor on the inside. Thats why the mazes on old pac man monitors are dark. All the phosphor has has been burned off and all that is left is the naked tinted glass. Of course, this is just what I have been told over the years and what I have picked up from tech friends. I could be way off.
 
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I think I have the answer to this one. Its the reason I chose the KLOV name that I did. My mom used to work for the Phillips tv company when they had a factory in my home town. The best models of their TVs used a black matrix tube. If I am not mistaken a TV is like a flourescnet light bulb. Ever bust a marquee bulb. They have a white coating. I think that is phosphur. The inside of the tube has a layer of phosphur as well. When the color guns hit the front of the tube, that spot glows for a short moment. But behind the phosphur coated glas is another part of the tube. Their is a metal matrix that resembles a very fine sieve or grating. I believe that was what makes the various tiny dots as the color guns scan across that matrix and eventually make up the picture(about 60 pictures a second). Most tubes have a matix that is grey. I have also seen green, white, and even brown once or twice. But the best tubes had black. I think they all did the same job in function, but black allowed for a better contrast ratio in the picture (like the black inking in a comic book to make the colors pop) The black matrix also blocks out more ambient light. Now, when you go buy an LCD flatscreen TV, you can actually shop for a unit with a higher contrast ratio which is why the best LCDs are dark flat black. I think the phosphor in a tube is white(or grey) in color, but a monitor that keeps repeating the same picture over and over will burn and fade the phosphor on the inside. Thats why the mazes on old pac man monitors are dark. All the phosphor has has been burned off and all that is left is the naked tinted glass. Of course, this is just what I have been told over the years and what I have picked up from tech friends. I could be way off.

Makes sense.
 
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