14rp4 substitute

[jr_tech]

Did you try reversing the ion trap magnet so the other end points to the front of the set?

jr

[timmy]

This trap is the same no end is any different then the other. Would this make any difference?

[jr_tech]

Yes...I always mark an arrow on the trap pointing to the front before it is removed so I can put it back correctly.

jr

[Electronic M]

Single magnet traps may work better with one end facing the screen VS the other (I've seen this effect in action)...It's worth trying.

[timmy]

Should these magnets be weak are should they really stilck meaning strong.This one bearly holds a paper clip.

[timmy]

Ok you guys can laugh, big screw up I had been turning the wrong pot for brightness and now that I got the right one turned it up and was greeted with a perfect pic also found the sweet spot for the ion trap.

[Electronic M]

Always good to take a step back, and do a sanity check... I've made hair brained mistakes like that before. Reaction varies from damnit when I spent minutes finding it to elation on a mystery problem I'd been chasing for months (early in my TV work).

[dieseljeep]

Originally Posted by timmy

Ok you guys can laugh, big screw up I had been turning the wrong pot for brightness and now that I got the right one turned it up and was greeted with a perfect pic also found the sweet spot for the ion trap.

Is that using the original CRT?

[timmy]

Originally Posted by dieseljeep

Is that using the original CRT?

Yes I'm using the crt that came with the set although when I first checked the crt the reading was high but when I tried it a few days later the reading was lower but holding. Got Alittle buzz in the audio I have to find which can it is to adjust it out.

[timmy]

Ok the voltage is at 8.35 volts at the crt using a 49 ohm resistor across the heater. 52 , 56 , ohms the crt voltage is to high lower then 49 ohms is to low so this was as close as possible. 42 ohms were around 7.3 volts. So I settled on the 49 ohms. I also took out the 10 ohm power resistor and replaced it with a 22 ohm because of the diodes. B+ is 265 v the norm is 255 v so I think is close enough. Just have to find which can to adjust to remove a buzz in the audio and find out why the top of the screen is like a bright line across like on modern tvs the wide screen ends befor the top and bottom but it's the top that is bright on this set. It might be verticle.

[timmy]

Any clues what would cause the white line across the top of the screen I think it's verticle but checked resistors and changed all the caps and stumped at this point.