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Virtua Cop Monitor Help needed

Posted: December 21st, 2018, 10:11 am
by snakeblisken
Hi Guys

Could somebody point me in the right direction. I have a Nanao Ms9-29 monitor chassis and i need to replace L504 on the board. I take it that is a Inductor. The one i have the cover burnt completely and i cant make out what i need to replace it with. Some guidance would be amazing!

I also managed to get the LA7837 chip to fix he horizontal collapse . Caps look fine on inspection but the L504 on the board was burnt. Hoping this will get my screen back on.

Re: Time Crisis Monitor Help needed

Posted: December 21st, 2018, 12:27 pm
by grantspain
l504 is lin coil, 41A42000340-A
i doubt you will find one except on another chassis
la7837 is vertical deflection ic and nothing to do with horizontal, L504 does though

Re: Time Crisis Monitor Help needed

Posted: December 21st, 2018, 5:49 pm
by snakeblisken
Thank you so much for the reply.

Do you think that could be my prob?

As i start the machine a white horizontal like comes on then the CRT turns off.

also is there a part i could fit that would replace the role of that coil?

Re: Time Crisis Monitor Help needed

Posted: December 21st, 2018, 6:38 pm
by grantspain
show me a photo of the coil
horizontal line across crt is vertical collapse and indeed affected by the la7837

Re: Time Crisis Monitor Help needed

Posted: December 21st, 2018, 6:47 pm
by snakeblisken
Here is the image:

Image

Thanks again!

Re: Time Crisis Monitor Help needed

Posted: December 21st, 2018, 6:52 pm
by PrincessPrinPrin
That's fine, it's just the sleeve that got flaky.

Re: Time Crisis Monitor Help needed

Posted: December 21st, 2018, 6:55 pm
by grantspain
yes i agree, just got a bit warm which is normal

change the ic

Re: Time Crisis Monitor Help needed

Posted: December 21st, 2018, 7:10 pm
by snakeblisken
Thank you so much! Cool, should be here mid Jan, Will keep you guys posted on my progress. New to it all but really enjoying restoring a old gem.

Re: Time Crisis Monitor Help needed

Posted: December 21st, 2018, 7:35 pm
by PrincessPrinPrin
The coil is polarized: it needs to be put back on the chassis with the same orientation as before.

Re: Time Crisis Monitor Help needed

Posted: December 21st, 2018, 7:40 pm
by snakeblisken
How would i know the correct orientation?

Re: Time Crisis Monitor Help needed

Posted: December 21st, 2018, 7:48 pm
by PrincessPrinPrin
The sleeve has a white band. Align it with the silk screening on the chassis.

Re: Time Crisis Monitor Help needed

Posted: December 21st, 2018, 7:52 pm
by PrincessPrinPrin
hlin.jpg

Re: Time Crisis Monitor Help needed

Posted: December 21st, 2018, 7:56 pm
by snakeblisken
You a super star! infact this community is awesome!

Re: Time Crisis Monitor Help needed

Posted: December 21st, 2018, 8:27 pm
by snakeblisken
Not sure how to edit the Title, was suppose to say Virtua Cop and not Time Crisis. Blond moment. lol