REPAIR GUIDE - TurboDuo/PC Engine Duo: Total capacitor replacement chart

[SNKNostalgia]

So I have an S-Video Duo-R and I believe I have the jailbar issue.  Are we talking about the faint vertical lines on the screen?  If so, does The Steve have a fix for this? 

I also have the same issues on a couple of NES's I am trying to get repaired.

Here's a guide to AV mod a Toploader correctly.

[MotherGunner]

Oh so it's not the vertical lines through s-video issue but referring to the PCB.  Does anyone know how to makes the vertical lines go away?

[thesteve]

yes it is the vertical lines
add 2 caps as pictured

[MotherGunner]

Thanks Steve. PM incoming. :-)

[NightWolve]

Urm, stevie, might you be willing to grant the people that are interested in eliminating the jailbar issue the knowledge of the capacitance value of those surface mount caps that you added ? Or am I missing something here ? I didn't see where that info is at... Even if you don't have this problem, is it worthwhile to do it anyway ? Does this problem occur with S-Video and YPbPr output ?

[thesteve]

i used 22uf caps in the pic.
depending on your mod, you may need more capacitance.
it effects all outputs to differing degrees.
S-Vid (my way) doesnt suffer much.
anything from the RGB pins does

[DarkKobold]

Has anyone ever replaced the surface mount caps with new surface mount caps? I actually have a stock of the proper surface mount caps, but I imagine it would take a skilled tech to do the replacements.

[thesteve]

what do you mean?
we replace the aluminum surface mount caps regularly. (i use surface mount replacements)
the ceramic and tantalum rarely if ever need it.

[DarkKobold]

what do you mean?
we replace the aluminum surface mount caps regularly. (i use surface mount replacements)
the ceramic and tantalum rarely if ever need it.

Most people do like this one:

http://i1125.photobucket.com/albums/l594/superkon316/E5F7ADB3-2ACE-4C39-9749-958A676769F5-618-000001093B5D805C.jpg

They use radial through-hole capacitors to replace surfacemount caps. 

[thesteve]

using ceramic and tantalum SMD for replacements

[King_Vidiot]

Where's the best place to buy the caps needed for this?  I sent my turbo duo to a board member a few years ago but when I got it back it was still dropping the background music.  I assume they got lazy and didnt replace all the caps.  

Also can I just use regular caps? Or is sticking with surface mount caps better in the long run?

[NightWolve]

The regular aluminum caps are cheaper and you're better off with those. The surface mount aluminum ones are for tight spaces, but that isn't a problem when it comes to Duos. Neither is it much of one with the Express if you don't bother to put the RF shield plate back on. If you got money to spend, then you could go ceramic/tantalum like steve says, but it'd be way too much money for a Duo... I bought a big 900 pack cap kit for $25 bucks from a Chinese seller on eBay, and that's gonna have to do. Search eBay for capacitor kits and you'll find good deals on regular ones.

The seller has more: http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=190771132156

It arrived in 9-10 days. I've been impressed with all my purchases from China, both in price and the decent shipping time given the distance.

[ApolloBoy]

I don't know if I'd recommend cheap Chinese caps though, those usually don't last very long in my experience. For almost all of my recap jobs I use Nichicon, Nippon Chemi-Con and Panasonic caps which are excellent quality and should last for decades.

[NightWolve]

Who do you buy from ?

[BlueBMW]

I typically use Panasonic and buy from Mouser.