Some problems found on EHOME 8500
Corrugation stripes from the blue tube will occur after the machine running for 2 hours. When adjust the CONTRAST to 0, the stripes still exist; and if switch the SOURCE several times, the scene may become normal conditions, but will happen again about 10mins later. Would you advise this problem comes from which part of the machine and how could be fixed.
Thanks

This could be a HV problem, tube contamination, or a problem in the neck board, VIM board, CLM, V board or convergence board. your description is a bit weak. Can you post a pix of what you see?

HDM have been fixed, and changed for C50 and Q501. The problem still exists after the neck board of blue tube and red tube have been exchanged, so it means it’s not the problem from neck board. The problem won’t be happened when open the machine, but it must be happened after 2 hours running. The corrugation stripes occur gradually, at the same time, blue tube become lighter with tumbling strips, just like G2 has been enhanced. When adjust CONTRAST & BRIGHT to 0, the scene still exist. I will try to upload the pictures few days later.

I found it.Touch connect is not well.

I found it.Touch connect is not well.

I'm curious what that means ? Can you please elaborate ?
Thanks.

Me too!!!

Athanasios

Easy. The Langston Kinley sprocket wasn't connected to the bhotna filter via the ueberlitzwiring.


Geez, and neither of you are newbies either! :D

Ohhhhhh I thought it was a loose Kenuten valve.

Athanasios

Between VIM board and convergence board ,it was a loose.

Between VIM board and convergence board ,it was a loose.
the VIM and CVA board do not connect together do you mean each were loose?

Athanasios

Maybe my description was wrong. I pulled the VIM out of Marquee, and removed the three RCA's from the VIM. And recovered what I do before. So the problem was disappeared.

Sounds like the problem was a loose connection between the VIM and the VNB's