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Help with grayscale

 
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Sonictherevenge
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PostPosted: Sun Jun 29, 2008 2:11 am    Post subject: Help with grayscale Reply with quote

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.
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minnie



Joined: 18 Aug 2005
Posts: 2877
Location: Hell

PostPosted: Sun Jun 29, 2008 4:51 pm    Post subject: Reply with quote

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.
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PostPosted: Sun Jun 29, 2008 9:45 pm    Post subject: Reply with quote

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
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PostPosted: Sun Jun 29, 2008 10:10 pm    Post subject: Reply with quote

Look on the crt sockets.
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sonictherevenge



Joined: 30 Jun 2008
Posts: 3

PostPosted: Mon Jun 30, 2008 12:26 am    Post subject: Reply with quote

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
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PostPosted: Mon Jun 30, 2008 3:57 am    Post subject: Reply with quote

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