The NEW Build Your Own Arcade Controls

Main => Monitor/Video Forum => Topic started by: ncflagg on September 26, 2007, 03:34:51 pm

Title: Sanyo 20EZV Dark
Post by: ncflagg on September 26, 2007, 03:34:51 pm

I have a Playchoice-10 cabinet that I've been working on. I did a cap kit on both monitors to get rid of screen shrink. At the same time I expected the cap kit to fix the darkness problem. The cap kits fixed the screen shrink but not the darkness. (Yes I've adjusted the Screen, Brightness/color pots) I'm continually finding with my other cap kit installations that brightness never seems to be affected with a cap kit. I keep reading that cap kits DO help many brightness problems. Is this the case or are failing tubes usually to blame?

The tube in the Sanyo seems pretty sharp otherwise. Any ides on fixing the brightness?

Title: Re: Sanyo 20EZV Dark
Post by: grantspain on September 26, 2007, 03:59:19 pm

i think there is a sub brightness pot on that chassis,have you tried that yet

Title: Re: Sanyo 20EZV Dark
Post by: ncflagg on September 26, 2007, 04:40:35 pm

Sub brightness? mmm Maybe not. I've twisted every pot I could find. Any idea where it is?

Title: Re: Sanyo 20EZV Dark
Post by: grantspain on September 26, 2007, 05:34:58 pm

apparently vr301,have you checked the b+ voltage as well

Title: Re: Sanyo 20EZV Dark
Post by: Ken Layton on September 26, 2007, 06:20:16 pm

The sub brightness control is one of the trimpots located on the monitor MAIN board not on the small adjustments board.

Title: Re: Sanyo 20EZV Dark
Post by: ncflagg on September 28, 2007, 03:37:53 pm

I adjusted the sub brightness and it made a marginal difference. Could the B+ affect brightness? How do I check the B+?

Title: Re: Sanyo 20EZV Dark
Post by: Ken Layton on September 28, 2007, 07:06:49 pm

Then you might have a weak tube. Connect it to a rejuvenator and test it's condition.