CurtPalme.com Home Theater Forum

[dvh99]

yes, that is not fungus it is absolutely certain this comes from the bellows, i just used a mild dishwashing soapand cleaned it with flowing warm water.
had exactly the same problem when i omitted to wash the bellows, good thing no silicone is required and you didn`t use any, that would have sucked even worse.

[mr_ro_co]

[andreas]

Hello! Ive turned the PJ on and it works, but it does not work that good yet.... one thing is that the picture is leaning. The other and probably more dificult to fix is that the focus is not that good, specially not in the center. The good thing is that i can adjust astig all over the zones as original on the marquee! I figure that the astig conection is the corect then.

if i turn the overall focus up 100 it is defocusing but when ramping under 50 nothing more hapens, its like its out of range for where it would be sharpest. Do you think it has to do with the conections ive made? AND corner focus does not seem to do much. the center focus afects the cornes greatly and the corners are actually the shapest. When doing the rgb focus the range rans out when going down to about 20(same for all colors). now its time to sleep

thanks again for all help ive got from you all!

[mr_ro_co]

[Nashou66]

[andreas]

okey guys, il keep it to this thread then. I did revrsed the the static focus conection for blue to see what would hapen.It was the same only the best rgb focus was 80 instead of 20. still out of range. Then i flipped the blue coil and the housing with it. It improved a litle, still out of focus but better and more equal from side to mid section. The leaning was going in the other direction instead, perhaps a litle less. Im thinking of fliping the coils for all three but take the housings of and just tejp them for more space and to get them even a litle further upwards.

[andreas]

What i did now was that i changed the wiring between the dynamic focus conections, yellow to blue instead. it worked much better. nearly there! the astig control works great. its even hard to adjust because it does not flare enough. this is when aming the yoke and inside coil forward as original with no fliping. The raster is still tilted... ive also reversed the blue coil in the shell and it does not work well, vere bad focus if not aming forward.

[mr_ro_co]

[Nashou66]

Pics for the G90 yolk thread: https://www.curtpalme.com/forum_archived/viewtopic.php@t=30815.html





Athanasios

[andreas]

the focusi okey on the green+red but really bad on the blue, i have conected the cables the same way. is it about the rotation of the coils then? the rotation on the blue seems to effect the green and reds best focus point to.

[Nashou66]

Rotation should not matter with focus but it might alter the angle of the image or the leaning you see, but I could be wrong. If you plan on removing the plastic housing and just using the magnet structure wrapped in Rubber Tape be careful not to touch them while powered on, the static shock is painful and scare the crap out of ya!!! I would add a ground strap taped to the magnets and then grounded to the Chassis somewhere. But if you can turn the coil while the PJ is on with no cables connected and see where the center focuses best and then lock the coil in place there. connect the cables and go from there.

Athanasios

[andreas]

hello! i must have been close to a shock like that then

this is what my testpattern is like. I can ramp the focus from 50 and upwards and from 20 in rgb focus mode. the pattern gets even more vlurry(unfocused) on the blue. the range are not enough.. it looked like that on R, G before i changed the dynamic focus wiring and was fixed by that. I conected the same way for blue but it turns out like this.... this yoke was the one of the three i bought that had been opened up. it looks the same as far as i can see.

[andreas]

ive messured the ohms and found out that the values seems to be the right ones for the static focus coils on the R and G, at the blue to at first but then ive got nothing. I think that perhaps the thin white and yellow wires has been damaged. Or worse that the coil is broken in some way. ive opened it up and tried to messure but got no results. Is it possible to use the marquee original yoke for blue and the new ones for R+G?

[mr_ro_co]

[andreas]

Great to her that, i did not think it would harm the coil to rewind a litle but its good to hear from someone else. Im at work now so i will comfirm the wiring for the static coil later.

[mr_ro_co]

[dvh99]

http://www.technick.net/public/code/cp_dpage.php?aiocp_dp=util_inductance_circle

inductance calculator.

who has some g90 focus yokes for me so i can play around with them?

if you don`t need the outer casing you can go with a slightly thicker enamelled copper wire to lower resistance.

http://en.wikipedia.org/wiki/Permeability_(electromagnetism)

[andreas]

hello steve and everyone interested in the subject. The static focus coil conection is:

marquee red-g-90 green

black-yellow

I did try to rewind but that was hard to du withaut rewinding the whole coil up. still no results... frustrating stuff. perhaps i can get help in some electronic shop or by a friend that know electricity. Or use the old thomson yoke but i think ive read it was a bad thing to do.

[mr_ro_co]

[dvh99]

enamelled copper wire

is the name to look for on ebay if you decide to rewind which i think is recommended as the inductances from the g90 and the marquee vary quite a bit.

like i said, get the thickest wire that will fit.