MOD GUIDE - Universal RGB-to-YPbPr/Component Circuit & Mod [8/24/2014]

[mickcris]

These are soldered by hand correct? I mean seriously, this thing looks like it was done on a machine! If they are done by a machine ok nvm... but... What size solder diameter are you using?
I am using .032 and I think now that it is too large to be using for super clean solder joints like what I see on this board.

You will get cleaner looking joints if use extra flux.  Shouldn't have much to do with the solder diameter.  Pick up a something like this (this is what I use):
http://www.ebay.com/itm/Kester-951-Soldering-Flux-Pen-Low-Solids-No-Clean-10ml-Xbox-360-PS3-Reflows-/360972271403

[MNKyDeth]

Ahh ok, I always use rosin-core solder so assumed the flux already in it was enough. Just added to my list of things to pick up or order. Thank you.

[BlueBMW]

I believe they are assembled by hand but with solder paste and a hot air station or oven.

[ProfessorProfessorson]

well i have a GBS8200 and a version2 handy so i tried some cards
didnt get a full screen flash on anything, but sync was solid on everything i had handy
LEGEND OF SUSANO has a 3/4 screen flash and it was solid

Version I have here is a V2 I believe. It is installed in a Ten No Koe 2. In Side Arms it will happen on the wheel boss if I remember right. On like Neutopia it will happen during the lightning flash at the temple when you first start the game. Any idea on how to fix it? My Toshiba via component in copes with it much better, but the GBS via component in will lose synch for a brief second when that kind of flashing occurs.

[turbokon]

Also adding 1kohm from sync to ground helps with sync issues on some TV set. 

[turbokon]

Yep these are assembled by hand using solder paste and hot air gun.  Very tedious I must add.

[turbokon]

Yep these are assembled by hand using solder paste and hot air gun.  Very tedious.

[thesteve]

well i have a GBS8200 and a version2 handy so i tried some cards
didnt get a full screen flash on anything, but sync was solid on everything i had handy
LEGEND OF SUSANO has a 3/4 screen flash and it was solid

Version I have here is a V2 I believe. It is installed in a Ten No Koe 2. In Side Arms it will happen on the wheel boss if I remember right. On like Neutopia it will happen during the lightning flash at the temple when you first start the game. Any idea on how to fix it? My Toshiba via component in copes with it much better, but the GBS via component in will lose synch for a brief second when that kind of flashing occurs.

try adding a cap across the diode. (diode is marked D1, the cap will be - to stripe and will never see over 1V)
that should improve the luma stability and may be enough to get you there
the 1 i tested the GBS on has a 22uf across the diode and is a ver2 board

[ProfessorProfessorson]

well i have a GBS8200 and a version2 handy so i tried some cards
didnt get a full screen flash on anything, but sync was solid on everything i had handy
LEGEND OF SUSANO has a 3/4 screen flash and it was solid

Version I have here is a V2 I believe. It is installed in a Ten No Koe 2. In Side Arms it will happen on the wheel boss if I remember right. On like Neutopia it will happen during the lightning flash at the temple when you first start the game. Any idea on how to fix it? My Toshiba via component in copes with it much better, but the GBS via component in will lose synch for a brief second when that kind of flashing occurs.

try adding a cap across the diode. (diode is marked D1, the cap will be + to stripe and will never see over 1V)
that should improve the luma stability and may be enough to get you there
the 1 i tested the GBS on has a 22uf across the diode and is a ver2 board

Sorry, having an off/tired day, so going to need this to be more specific. When you say stripe, are you referring to the line marking "cathode" on the diode, or the stripe on the cap itself? If the former, I have never heard anyone refer to the cathode end of a surface mount diode as a stripe before, so kinda confusing. I usually only see that term applied to cap's stripe side in reference to the negative polarity of a capacitor.

[thesteve]

the cathode on the diode is your -

[thesteve]

looks like i said it wrong the first time anyway

[ProfessorProfessorson]

looks like i said it wrong the first time anyway

So edit your post and fix that shit. People be all confused and like wtf.

[ProfessorProfessorson]

Tried both the 22uf cap on the diode, then the 1k resistor from sync to ground. Neither method had any affect. Sync still drops on the GBS when the lightning flashes on Neutopia at the start of the game, and kinda slightly wavers on my Toshiba. The issue on the Toshiba is more of a nitpick, but the GBS thing is pretty annoying since it cripples gameplay on Side Arms on some of the bosses.

[Keith Courage]

Tried both the 22uf cap on the diode, then the 1k resistor from sync to ground. Neither method had any affect. Sync still drops on the GBS when the lightning flashes on Neutopia at the start of the game, and kinda slightly wavers on my Toshiba. The issue on the Toshiba is more of a nitpick, but the GBS thing is pretty annoying since it cripples gameplay on Side Arms on some of the bosses.

Did you try messing with the luma gain yet? I've come a cross a few TVs that need it set in a specific spot to get the screen to stop being wavy/flickering. Different luma setting for both Tvs I have come across the issue with. Otherwise most other TVs work just fine.

[ProfessorProfessorson]

Nope not yet. Was hoping to just have a solution that wont affect use on other tv's. Honestly at this point I'm not going to worry about it. The Toshiba is fine. The Side Arms flash doesn't affect it, only the lightning bit from Neutopia, and not enough for the screen to stop displaying or anything. The GBS thing sucks, but it's not needed for my Turbo or anything yet.