Build Your Own Arcade Controls Forum

Main => Monitor/Video Forum => Topic started by: brad808 on December 27, 2015, 10:23:26 pm

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Post by: brad808 on December 27, 2015, 10:23:26 pm

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Title: Re: looking to do tube swap
Post by: grantspain on December 28, 2015, 03:08:15 am

doutful as i am sure the inductance does not match

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Post by: brad808 on December 28, 2015, 04:57:57 am

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Title: Re: looking to do tube swap
Post by: grantspain on December 28, 2015, 06:09:25 am

you need an inductance meter and read the same way as for impedence
i know the d9400 is 0.240mh and I am sure the kt29xx are 0.300mh
plus the d9400 is pure flat crt and the kt29xx are semi curved
it will probably work but you will get unfixable geometry issues

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Post by: brad808 on December 28, 2015, 06:29:43 am

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Title: Re: looking to do tube swap
Post by: grantspain on December 28, 2015, 07:32:14 am

Quote from: brad808 on December 28, 2015, 06:29:43 am

Ok I won't bother if there will be issued. The d9400 I have is in fact a curved monitor not flat.

i have only seen one d9200 curved and never a d9400 so it must be quite rare
you should consider asking Chad at arcadecup whether he thinks they may match ok

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Post by: brad808 on December 28, 2015, 03:48:45 pm

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Post by: brad808 on December 28, 2015, 09:03:18 pm

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Post by: brad808 on December 30, 2015, 10:05:30 pm

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Title: Re: looking to do tube swap
Post by: grantspain on December 31, 2015, 05:37:20 am

you are brave to have done this but looks as if you may have found a good match

you may be able to counter the low contrast by a number of routes,
first use the RGB option in the menu to adjust each colour gain and cut off

i think there is a factory menu option but i can't remember how to access this on the 9400,it will be a combination of two buttons on the remote board-this will allow you to get a wider range of adjustment on the contrast etc

the issue could be a mismatch on the heater current,there is a adjustment pot that is sealed on the main chassis-this may sort out the issue but i have never adjusted this pot before so i do not know what will happen

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Post by: brad808 on December 31, 2015, 08:43:30 am

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Title: Re: looking to do tube swap
Post by: grantspain on December 31, 2015, 12:15:57 pm

hv adjust that is,shouls not adjust that

http://www.wellsgardner.com/pdf/Board/D9400.pdf (http://www.wellsgardner.com/pdf/Board/D9400.pdf)

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Post by: brad808 on December 31, 2015, 12:31:26 pm

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Title: Re: looking to do tube swap
Post by: grantspain on December 31, 2015, 01:10:28 pm

yep