Motorola ts907 low hv

[dtvmcdonald]

Originally Posted by Yamamaya42

This is prof positive that the color circuits of your TV is working.

http://videokarma.org/attachment.php...9&d=1669302177

I disagree. It looks like very bad purity.

[timmy]

Originally Posted by dtvmcdonald

I disagree. It looks like very bad purity.

Yes it is bad purity since nothing is setup.

[Electronic M]

All you need for TV alignment on a "modern" 45 MHz IF like that is a B&K 415 and an oscilloscope about $50-100 if you shop around the right places.. IIRC the person who sold that set wanted like $250 for it... Another $100 for an alignment rig doesn't sound like a bad investment. I have an alignment rig just like I mentioned...I think the scope cost me $50 and the B&K cost me $25. I have been able to do a couple of alignments with it, but I'm still learning.

If you are going to screw around setting it by eye (that'll add another 200 pages to this mess easily) you should use a Philips PM-5544 test pattern (download a picture of one off the Google search, put it on a USB and use a media player that can display pictures from a USB on a TV). The PM-5544 has color bars and a multiburst pattern which gives a visual representation of the IF frequency response on screen...With that pattern you should be able to see if you are making things worse or better...If you can get it right by eye it'll be a small miracle.

Originally Posted by dtvmcdonald

I disagree. It looks like very bad purity.

I had the same thought.
I think there were other pictures where the OP had more obvious real color in the pictures.

EDIT: ugh! Another stinking page.

[timmy]

Originally Posted by Electronic M

All you need for TV alignment on a "modern" 45 MHz IF like that is a B&K 415 and an oscilloscope about $50-100 if you shop around the right places.. IIRC the person who sold that set wanted like $250 for it... Another $100 for an alignment rig doesn't sound like a bad investment. I have an alignment rig just like I mentioned...I think the scope cost me $50 and the B&K cost me $25. I have been able to do a couple of alignments with it, but I'm still learning.

If you are going to screw around setting it by eye (that'll add another 200 pages to this mess easily) you should use a Philips PM-5544 test pattern (download a picture of one off the Google search, put it on a USB and use a media player that can display pictures from a USB on a TV). The PM-5544 has color bars and a multiburst pattern which gives a visual representation of the IF frequency response on screen...With that pattern you should be able to see if you are making things worse or better...If you can get it right by eye it'll be a small miracle.



I had the same thought.
I think there were other pictures where the OP had more obvious real color in the pictures.

EDIT: ugh! Another stinking page.

If I can get that test pattern on a dvd I can plug the dvd into one of those modulators then cable wire from modulator to tv antenna input using the matching transformer that should work.