Knockoff TG-16/PCE RGB A/V Booster

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Shoryukev
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Knockoff TG-16/PCE RGB A/V Booster

Post by Shoryukev »

I recently picked up a knockoff a/v booster that has amplified RGB signal output off ebay, and thought I would share my experience with it to help anyone else who gets one. The DB electronics booster is surely better, but has been out of stock for a long time. Overall it works well, but has a few quirks. Note the ebay description says it may not work with a US turbografx without trimming the plastic to fit, I did not have this issue at all. It has plenty of clearance and slides right on. The product also looks nothing like the picture, it actually looks much better IMO (the pictures in the listing must be of an old revision)

http://www.ebay.com/itm/PC-Engine-AV-Bo ... OSwMgdX1NF~

1) I e-mailed the seller asking about SCART cable specs, and he informed me (through very broken english) that the unit itself already contains the resistors and capacitors needed in the RGB lines, so the cable would need to have them removed. I asked about sync but didn't get a clear answer, but it seems to use composite video as sync so there will be no components in that line either. I have a sync stripper in my setup (it's built into my YPbPr converter) so it is not an issue for me, but it might be for some. I ordered a cheap-o SCART cable and took the parts out of it and it works just fine. My only real complaint is it isn't as sharp as my genesis, it's about on-par with a non 1-chip SNES sharpness (though the colors are more vibrant than a non 1-chip). This could be due to the SCART cable itself (or maybe the lack of csync?), since it is about half the thickness of my other better SCART cables and probably lacks a lot of shielding. After I test one thing I forgot to look at (see #2) I will order a better custom cable for it and report back.

2) There is some sort of grounding problem with the DIN output which causes a loud audio hum...but also makes the screen a little dark and makes the image not quite as clear. If you connect anything to the RCA connections on the back the problem goes away, so what I decided to do was disconnect the audio wires inside the SCART and solder an RCA audio cable to the SCART connector. You can just run the audio straight to your amp or television and it fixes the issue as long as it's connected to something....I just like having it consolidated with the SCART end. I was a bit frustrated last night and didn't think about it, but I should have just tried soldering a wire between the ground pin on one of the RCA connectors to the DIN connector on the board....do'h! This also might be caused by my SCART cable, maybe it doesn't have the ground connected properly....I will report back on this.


For someone wanting to save a couple bucks or doesn't want to wait it certainly works fine. If you don't have an RGB setup the composite video also looks great (for composite). Before it came in the mail I had the pins in the back "rigged" up to a composite video cable and through this a/v booster the composite video signal is better. Overall I'm happy with it, but will have to wait on my final verdict until I have a better SCART cable to test it with. My reason for posting is to inform anyone who's thinking about buying this since right out of the box it has some issues....hopefully this helps someone.

Lastly here are some pictures. These are poorly taken from a cellphone, the signal chain for the screen image is TG-16 booster>fusion component converter>JVC AV-32320 television. In the screen picture you can see some artifacts to the left and right of the characters, this goes away when I back off the sharpness....but the TV settings used in the picture work fine with my other systems so I left it like that.

On a side note the music and screen it goes to when you try to play multiplayer without a turbotap is hilarious. It's out of frame but the white bomber is sitting in front of a TG-16 with only one controller and no turbotap and is crying about it. :lol:

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Guspaz
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Re: Knockoff TG-16/PCE RGB A/V Booster

Post by Guspaz »

You get what you pay for. Just compare that PCB (which seems to have nothing but three caps, three transistors, and a resistor/LED) with a real booster:

http://db-electronics.ca/wp-content/upl ... angled.jpg

Also, I could be wrong, but René's pricing may be in CAD, so it might be $49 USD for the booster rather than $65.

Buying the real deal gets you everything amplified/encoded from RGB using the Sony CXA1645, and s-video (the knockoff doesn't), and it gets you csync (the knockoff is composite video sync).
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Shoryukev
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Joined: Thu Dec 10, 2015 7:18 pm
Location: Cleveland, OH

Re: Knockoff TG-16/PCE RGB A/V Booster

Post by Shoryukev »

The db-electronics one is definitely better, I just got impatient as it's been out of stock for a few months. I think I missed a run that happened about 2 weeks ago that sold out within an hour or two, I've since added his store page on my facebook and have been watching it like a hawk lol.

I more or less just wanted to give a warning to potential buyers, I thought I could just take the caps & resistors out of a standard SCART cable and have something that holds me over for a few months but that was not the case. If you're using composite video it is a good alternative to a regular A/V booster but RGB users look elsewhere. It's not terrible, but also not great....not a bad $20-30 gamble, but it was just that.
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Guspaz
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Re: Knockoff TG-16/PCE RGB A/V Booster

Post by Guspaz »

Stone Age Gamer's "Engine Block" variant (which includes the shell) is available for pre-order, so you can order that and just wait for it to arrive.
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Shoryukev
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Re: Knockoff TG-16/PCE RGB A/V Booster

Post by Shoryukev »

I might do that, but I'd rather 3D print my own shell so I can try to make it look like the original dust cover. Kinda silly but that was my plan.
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