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 Post subject: PCE Duo Issue
PostPosted: Wed Sep 23, 2015 1:32 pm 



Joined: 15 Feb 2012
Posts: 151
Hey guys, having an issue with my RGB modded Duo. Getting extreme smearing to the right and have no idea whats causing it. Any ideas where I should start looking?

Image


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 Post subject: Re: PCE Duo Issue
PostPosted: Wed Sep 23, 2015 1:47 pm 



Joined: 04 Sep 2010
Posts: 1783
Location: Denmark
Start by looking at the RGB cable.


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 Post subject: Re: PCE Duo Issue
PostPosted: Wed Sep 23, 2015 10:23 pm 


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Joined: 21 Oct 2013
Posts: 676
That's a weak sync signal. If you're grabbing csync straight off the board it's only at about 0.2-0.3vpp and it will end up looking like that. You need to boost the sync by either running the CSYNC through a lm1881 or stripping it from composite with a lm1881.


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 Post subject: Re: PCE Duo Issue
PostPosted: Thu Sep 24, 2015 11:28 am 



Joined: 15 Feb 2012
Posts: 151
Thanks for the replies guys, I have no idea which RGB mod was used for this one. A friend of mine did it for me, wont be able to check the console until I grab a torx screwdriver tomorrow.

I did crack open the cable though for a look and tested the continuity.

Image

Pinout seems to be this.

<DIN8 - SCART>
6 - 15
8 - 11
7 - 7
1 - 2
4 - 20
2 - 18
5 - 6
3 - Nothing


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 Post subject: Re: PCE Duo Issue
PostPosted: Thu Sep 24, 2015 12:25 pm 



Joined: 04 Sep 2010
Posts: 1783
Location: Denmark
Where are the 220uF caps? Perhaps your friend put them inside the console as part of the amp circuit.


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 Post subject: Re: PCE Duo Issue
PostPosted: Thu Oct 08, 2015 11:47 pm 



Joined: 15 Feb 2012
Posts: 151
Grabbed myself a Torx set and cracked open the Duo. What i'm seeing is not filling me with confidence.

Click for high res.

Image


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 Post subject: Re: PCE Duo Issue
PostPosted: Fri Oct 09, 2015 12:11 am 


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Joined: 05 Nov 2009
Posts: 1400
Is this the work of Drakon? Only salvageable thing about this mod is the 4 wires soldered to the Hu6260! Install an AV Driver and get a quality cable made. I thought the standard RCA/RGC cables were awful?! :?

Hot glue, wires are stripped to far, and no shrink tubing. :shock:


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 Post subject: Re: PCE Duo Issue
PostPosted: Fri Oct 09, 2015 12:28 am 



Joined: 15 Feb 2012
Posts: 151
I don't even really know what to do about this, I'm a novice at soldering but I think even me attempting it would be cleaner.

Guess it's time to pick up a few soldering supplies, watch some YouTube videos and get to work. Can't think of anyone I'd trust here in Australia to do this properly.


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 Post subject: Re: PCE Duo Issue
PostPosted: Fri Oct 09, 2015 4:00 am 


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Joined: 05 Nov 2009
Posts: 1400
Youtube videos on the specific mod won't help you. You need one of Tim Worthington's AV-DRIVER PCBs for a proper RGB mod. Contact him and one of his recommended installers and you should be set.

http://etim.net.au/shop/shop.php?sc_page=105


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 Post subject: Re: PCE Duo Issue
PostPosted: Fri Oct 09, 2015 5:21 am 



Joined: 15 Feb 2012
Posts: 151
Oh I meant more just for cleaning up the soldering and whatnot, I should be ok just soldering to some pads and heat shrinking.

I'll see if any of them are that active at the moment, a lot of the Aussie guys have quietened down.


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 Post subject: Re: PCE Duo Issue
PostPosted: Sun Aug 13, 2017 9:28 am 



Joined: 15 Feb 2012
Posts: 151
Long overdue update. Finally tackled a full clean up and recap of my Duo and installed Tims AV Driver. Did the jailbar fix as well, the video output is fantastic!

Having a little audio issue though, the headphone jack has both right and left channels but the AV port only has the left channel. Been poking around with the multimeter and cant seem to find a broken trace. Is there somewhere i can tap the audio from and use the AV Drivers amp instead?Image

Sent from my SM-G950F using Tapatalk


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 Post subject: Re: PCE Duo Issue
PostPosted: Tue Aug 15, 2017 11:30 am 



Joined: 15 Feb 2012
Posts: 151
Any ideas guys? Would love to finish this one up.

Sent from my SM-G950F using Tapatalk


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 Post subject: Re: PCE Duo Issue
PostPosted: Wed Aug 16, 2017 2:12 am 



Joined: 15 Feb 2012
Posts: 151
Sorry to keep bumping guys, think i may have found the issue. Im only getting 2.4v on the input pin of the M51131L IC. Datasheet says it should be 8-15v. Can anyone confirm? Slightly paranoid about frying the IC.

Sent from my SM-G950F using Tapatalk


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