Dragon's Lair Fans - Arcade Lifestyle

General Chat => 'Business' Area : Buy/Sell/Trade => Topic started by: Purity on April 04, 2015, 09:08:27 PM

Title: WTD: Q*bert line filter PCB
Post by: Purity on April 04, 2015, 09:08:27 PM

If anyone has one for sale please drop me a PM

Title: Re: WTD: Q*bert line filter PCB
Post by: level42 on April 05, 2015, 03:44:32 AM

DuDe, just bypass it like I did.....saves money and a lot of problems....

Title: Re: WTD: Q*bert line filter PCB
Post by: Purity on April 05, 2015, 12:17:12 PM

Quote from: Level42 on April 05, 2015, 03:44:32 AM

DuDe, just bypass it like I did.....saves money and a lot of problems....

Hey dude, I've heard you can bypass it.  Do you have any info on doing this please?

Title: Re: WTD: Q*bert line filter PCB
Post by: level42 on April 05, 2015, 11:40:59 PM

:)

Sure....just solder each and every wire of the connectors together that have the same colors :)

Strip, twist, solder, isolate with heat-shrink.

The way I figured out how to do it was lay down the harnesses (the main harness and the PCB harness) and see where all connectors on the boards go.

Title: Re: WTD: Q*bert line filter PCB
Post by: level42 on April 05, 2015, 11:49:46 PM

Here's how it looks now.....not a very good pic I'm afraid.....

(https://www.dragonslairfans.com/smfor/index.php?action=dlattach;topic=2937.0;attach=9263;image)


These are the connectors that will not be causing any trouble anymore:

(https://www.dragonslairfans.com/smfor/index.php?action=dlattach;topic=2937.0;attach=9265;image)


There's one more, the one going to the monitor but I had to connect a brand new ready made monitor cable to that.

Title: Re: WTD: Q*bert line filter PCB
Post by: Purity on April 06, 2015, 01:46:00 AM

Thanks.  This is really useful.  So you have literally removed the entire filter and joined all the input and output wires of the filter together.

I did notice that the missing connectors are A8-J14, and A8-J7.  Off the top of my head I think they are something to do wth the RGB, sync etc for the monitor

Title: Re: WTD: Q*bert line filter PCB
Post by: level42 on April 06, 2015, 10:52:18 AM

Exactly. it saves a lot of potential problems and....The first machines didnt have the filter board so If you worry about originality you're still OK ;);)

Its really worth The time, its not that much work and If you go wire by wire its almost impossible to make a mistake.

Yeah as mentioned I think The only one left out on the picture is the one for the video.

If you look at The schematics its also clear what needs to be done.

Title: Re: WTD: Q*bert line filter PCB
Post by: Purity on April 06, 2015, 12:28:54 PM

Yea it seems like the way to go.  My line filter has previously got a bit burnt when with a previous owner and they have done a complete bodge of fixing it:

(https://farm9.staticflickr.com/8716/17030280605_b431ff647b.jpg)

(https://farm8.staticflickr.com/7643/17030281855_38b9dc140a.jpg)

Title: Re: WTD: Q*bert line filter PCB
Post by: level42 on April 06, 2015, 06:06:41 PM

Yikes......yep, getting rid of it will make Q*bert a lot happier ;)