Electronic equipment repair and service manual search discussion :: Topic review

Guest · Posted: Mon Jun 30, 2008 3:57 am Post subject:

I'm guessing, black. This is a 1990 model.

sonictherevenge · Posted: Mon Jun 30, 2008 12:26 am Post subject:

I thought that might be it each Crt at the base on the flat board there are 2 pots on small one larger and both round. here is pic

http://img.photobucket.com/albums/v310/made2luv3/Michaelsstuff.jpg

Guest · Posted: Sun Jun 29, 2008 10:10 pm Post subject:

Look on the crt sockets.

Guest · Posted: Sun Jun 29, 2008 9:45 pm Post subject:

thanks for answering, I have looked and I dont have the box with the screen adjustments focus. The 3 focus pots are on the back of the Convergance board but I cant find the screen adjustments pots. The picture looks great except for the gray areas. Its a CU4601b hitachi

minnie · Posted: Sun Jun 29, 2008 4:51 pm Post subject:

The block is in the front of the set. Keep adjusting the 3 colors until you have the best possible black and white. If you have a tinge of green start by turning down the green screen control in the front of the set.

Sonictherevenge · Posted: Sun Jun 29, 2008 2:11 am Post subject: Help with grayscale

I have a older hitachi 46 inch I recieved the set at no cost it didnt work I fixed that, He said it was out of convergiance I took out the board and resoldered everything and fixed that. After hours of tinkering with the geometry screws I fixed his attempt at correcting the convergence. Now I just need to adjust the greyscale the color is good the black and white are OK but the areas on screen that should be greyish are greenish I looked for the screen adjustment screws but I dont have a Block with six adjustments The focus is on the convergance board but I dont see anything else but the geometry screws. any ideas.