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[Console Repair/Mod Center / Re: REPAIR GUIDE - TurboDuo/PC Engine Duo/R/RX: Laser Swap & Adjustment Guide]

Dear blueraven,

i adjust every pot with my ears except VR102.(dont have an ocilloscope)
Then i start with VR102 (just a little bit up) and the game cd are booting.
I testest 3 games and every game is playing now. From one Level to another level it take some time to load (maybe i need a finetune) but it works now .

Thank you blueraven

[Console Repair/Mod Center / Re: REPAIR GUIDE - TurboDuo/PC Engine Duo/R/RX: Laser Swap & Adjustment Guide]

Hello Guys, got the following Problems:

Got a broken PC Engine Duo and i switched all caps and one Vram (had some graphic issues, one via was broken but i fixd it).
Now i got a new Hop M3 Laser and now the test:
It only reads Music CDs (No game cds)
I try to fix it with the pots but not really anything happen.
Is this a Laser adjustment Problem (with Pots) or another Proplem ?

[Console Repair/Mod Center / Re: RGB Mod in interface unit]

Yes i checked the 5 Volt on the amp.
Hm i payd 3$ for 10 Chips from China. I will test some others this week  (dont have an Adapter, it takes some time to switch

[Console Repair/Mod Center / Re: RGB Mod in interface unit]

Hello Guys,

dont wont to make a new post, maybe one can help me:
I am from Europe and make the following Interface RBG Mod with THS7314 with 9pin din socket and a mega drive 2 rgb cable (the cable just have resistors in it):
http://8bitplus.co.uk/projects/nec-pc-engine-interface-unit-rgb-mod/

As csync i grab composite from the port, everything else is like the MOD from 8bitplus.(The resistors after the amp are on the scart cable ).
When i start the TV i dont have any picture, sound is ok.
When i go direct for r,g and b to the socket (skip the ths7314) then i got a picture !
So the failure must be in the amp circuit, but i make everything like the page.
I took 2 other 7314 chips but with no effects.
Have everyone a idea? I can skip the amp but i wonder why isnt work. (maybe all chips are bad , they come all from china for a very little price)?