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Main => Monitor/Video Forum => Topic started by: jconstanza on December 29, 2008, 04:59:14 pm

Title: NO RED, & NO SIGNAL on my Wells D9200
Post by: jconstanza on December 29, 2008, 04:59:14 pm

My monitor started off with a Vertical collapse. Replaced a cap on it, turned out good except no red. I have swapped, Q201, IC201, IC202 and nothing. Then I swapped IC403 and IC101. Checked cold solders...nothing. I had the Wells pattern generator hooked up to it. After I swapped transistors it started giving me a "No Signal".  I'm friggen stumped!

Title: Re: NO RED, & NO SIGNAL on my Wells D9200
Post by: grantspain on December 29, 2008, 06:07:34 pm

don't you fella's ever use the wells site?
http://www.wellsgardner.com/pdf/Repair/D9200_27_33_39_inch.pdf

Title: Re: NO RED, & NO SIGNAL on my Wells D9200
Post by: jconstanza on January 05, 2009, 06:20:40 pm

Yes, I actually do use the website a lot, but that only gets me so far. This one is tricky, well at least for me. Wells says to try IC201 (did that), R228 (resistor not on board), Q202 (did that). So where do I go now? I think I even tried a different neck board. I was able to fix the "No Signal" problem. So now I'm just missing red.

Title: Re: NO RED, & NO SIGNAL on my Wells D9200
Post by: grantspain on January 05, 2009, 06:28:51 pm

wells repair guide can get you so far and then its on to the schem,now have you tried q201 and q203
r211 and r253

Title: Re: NO RED, & NO SIGNAL on my Wells D9200
Post by: Kevin Mullins on January 05, 2009, 06:33:41 pm

Have you tried swapping signal wires around?

Does your red lead make the blue or green come on?
And vice versa.... does your blue or green lead make the red come on?

Title: Re: NO RED, & NO SIGNAL on my Wells D9200
Post by: Ken Layton on January 05, 2009, 06:42:25 pm

And don't forget this service bulletin:

http://www.wellsgardner.com/pdf/Service/SERVICE%20BULLETIN%2030A%20NECK.pdf

Title: Re: NO RED, & NO SIGNAL on my Wells D9200
Post by: sarge on January 05, 2009, 09:24:14 pm

You may want to check your color settings in your osd menu as well.  You can get into the factory menu by holding a couple buttons down on power up.  I cant remember which ones though. 

Title: Re: NO RED, & NO SIGNAL on my Wells D9200
Post by: grantspain on January 06, 2009, 03:10:59 pm

Quote from: sarge on January 05, 2009, 09:24:14 pm

You may want to check your color settings in your osd menu as well.  You can get into the factory menu by holding a couple buttons down on power up.  I cant remember which ones though. 

thats a good point,i remember a problem with pentranic digital monitors whereby once in a while they would get a static zap in eeprom and do weird things with brightness and colours and thus only required a factory reset