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31
TG/PCE Repair/Mod Discussion / Re: Duo RX loud scratching sound when CD spins
« Last post by opticalnoise on March 31, 2024, 11:52:56 PM »
Hi Keith and xodarap, thanks for your insights. I've done my best to take the pictures of the cd mechanism but if I'm still missing something please let me know and I will try again.

My main question before I try to do any repairs is why does the mechanism seem to work perfectly well when sitting on my desk as seen in the video I posted earlier, but scratches and rubs when sitting in its spot on the main board? While taking these pictures, I put a CD on the spindle and spun it around with my finger and I could hear the disc rubbing on something. I took the mechanism out and put it on my desk, spun the disc with my finger, and it went around smoothly and without touching anything.









Thanks again everyone
32
Console Chat / Re: Your Daily Dose of Gaming.
« Last post by roflmao on March 31, 2024, 11:07:52 PM »
Quote from: majors on March 28, 2024, 08:37:49 AM
Brothers from a different mother! I too had recently played through SotN on my Chinese handheld. Those medusa heads in that "gear" room with the water STILL drives me mad. (the location where you have to hit the 4 gears till they "click" to open the secret passage). After getting an ending, I've been trying out the plethora of Gameboy games on the handheld.

I saved those medusa head clicky gear rooms until the end, haha! I hate those rooms with a passion. But I cleared 200.6% today! Woohoo!



Then I made it to Level 9 in Blazing Lazers, but wasn't able to beat the game this time. Still, making it this far on a little handheld felt like an accomplishment. I need to polish my chops before next weekend's MGC!



33
TG/PCE Repair/Mod Discussion / Re: SOLVED PC Engine DUO - Push Run Button with door open/No LED/No Laser/Disc Spin
« Last post by xodaraP on March 31, 2024, 02:31:49 AM »
This is now solved. I found Pin 11 on IC103 went to a dead via and so did Pin 94 of IC501

These have both now been repaired and the console now recognises when the door is open/closed

It?s not reading discs but that?s another problem
34
TG/PCE Repair/Mod Discussion / Re: PC Engine DUO - Push Run Button with door open/No LED/No Laser/Disc Spin
« Last post by xodaraP on March 30, 2024, 09:53:22 PM »
Here is a full pinout of IC501

Pin 1 - Vcc
Pin 2 - Pin 37 Cart + Pin 43 IC901
Pin 3 - Pin 24 Cart + Pin 64 IC901
Pin 4 - Pin 3 Cart + Pin 65 IC901
Pin 5 - Pin 31 IC515 + Pin 14 IC518
Pin 6 - Pin 30 IC515 + Pin 16 IC518
Pin 7 - Pin 2 IC514 + Pin 2 IC513 + Pin 2 IC515 + Pin 18 IC518
Pin 8 - Pin 31 IC514 + Pin 31 IC513 + Pin 3 IC515 + Pin 9 IC517
Pin 9 - Pin 3 IC514 + Pin 3 IC513 + Pin 29 IC515 + Pin 18 IC517
Pin 10 - Pin 28 IC514 + Pin 28 IC513 + Pin 28 IC515 + Pin 3 IC517
Pin 11 - Pin 4 IC514 + Pin 4 IC513 + Pin 4 IC515 + Pin 12 IC517
Pin 12 - Pin 25 IC514 + Pin 25 IC513 + Pin 25 IC515 + Pin 14 IC517
Pin 13 - Pin 23 IC514 + Pin 23 IC513 + Pin 23 IC515 + Pin 7 IC517 + Pin 19 IC512
Pin 14 - Vcc
Pin 15 - GND
Pin 16 - Pin 26 IC514 + Pin 26 IC513 + Pin 26 IC515 + Pin 5 IC517 + Pin 22 IC512
Pin 17 - Pin 27 IC514 + Pin 27 IC513 + Pin 27 IC515 + Pin 16 IC517 + Pin 23 IC512
Pin 18 - Pin 5 IC514 + Pin 5 IC513 + Pin 5 IC515 + Pin 9 IC516 + Pin 1 IC512
Pin 19 - Pin 6 IC514 + Pin 6 IC513 + Pin 6 IC515 + Pin 12 IC516 + Pin 2 IC512
Pin 20 - Pin 7 IC514 + Pin 7 IC513 + Pin 7 IC515 + Pin 7 IC516 + Pin 3 IC512
Pin 21 - Pin 8 IC514 + Pin 8 IC513 + Pin 8 IC515 + Pin 14 IC516 + Pin 4 IC512
Pin 22 - Pin 9 IC514 + Pin 9 IC513 + Pun 9 IC515 + Pin 5 IC516 + Pin 5 IC512
Pin 23 - Pin 10 IC514 + Pin 10 IC513 + Pin 10 IC515 + Pin 16 IC516 + Pin 6 IC512
Pin 24 - Pin 11 IC514 + Pin 11 IC513 + Pin 11 IC515 + Pin 3 IC516 + Pin 7 IC512
Pin 25 - Pin 12 IC514 + Pin 12 IC513 + Pin 12 IC515 + Pin 18 IC516 + Pin 8 IC512
Pin 26 - Vcc
Pin 27 - Pin 13 IC514 + Pin 13 IC513 + Pin 13 IC515 + Pin 11 IC520 + Pin 9 IC512
Pin 28 - Pin 14 IC514 + Pin 14 IC513 + Pin 14 IC515 + Pin 12 IC520 + Pin 10 IC512
Pin 29 - Pin 15 IC514 + Pin 15 IC513 + Pin 15 IC515 + Pin 13 IC520 + Pin 11 IC512
Pin 30 - Vcc
Pin 31 - GND
Pin 32 - Pin 17 IC514 + Pin 17 IC513 + Pin 17 IC515 + Pin 14 IC520 + Pin 13 IC512
Pin 33 - Pin 18 IC514 + Pin 18 IC513 + Pin 18 IC515 + Pin 15 IC520 + Pin 14 IC512
Pin 34 - Pin 19 IC514 + Pin 19 IC513 + Pin 19 IC515 + Pin 16 IC520 + Pin 15 IC512
Pin 35 - Pin 20 IC514 + Pin 20 IC513 + Pin 20 IC515 + Pin 17 IC520 + Pin 16 IC512
Pin 36 - Pin 21 IC514 + Pin 21 IC513 + Pin 21 IC515 + Pin 18 IC520 + Pin 17 IC512
Pin 37 - Pin 24 IC514 + Pin 24 IC513 + Pin 6 IC519 + Pin 20 IC512
Pin 38 - Pin 29 IC514 + Pin 29 IC513 + Pin 3 IC519 + Pin 21 IC512
Pin 39 - GND
Pin 40 - Pin 1 Cart
Pin 41 - NC
Pin 42 - NC
Pin 43 - NC
Pin 44 - Pin 19 IC520
Pin 45 - Pin 1 IC520
Pin 46 - Pin 22 IC515
Pin 47 - Pin 22 IC513
Pin 48 - GND
Pin 49 - Pin 2 Q501
Pin 50 - Pin 22 IC514
Pin 51 - NC
Pin 52 - NC
Pin 53 - NC
Pin 54 - NC
Pin 55 - NC
Pin 56 - Pin 17 IC509 + Pin 17 IC510
Pin 57 - Pin 15 IC509 + Pin 15 IC510
Pin 58 - Pin 3 IC509 + Pin 3 IC510
Pin 59 - Pin 2 IC509 + Pin 2 IC510
Pin 60 - GND
Pin 61 - Vcc
Pin 62 - Pin 1 IC509
Pin 63 - Pin 4 IC509
Pin 64 - Pin 1 IC510
Pin 65 - Pin 4 IC510
Pin 66 - Pin 10 IC509 + Pin 10 IC510
Pin 67 - Pin 6 IC509 + Pin 6 IC510
Pin 68 - Pin 7 IC509 + Pin 7 IC510
Pin 69 - Pin 8 IC509 + Pin 8 IC510
Pin 70 - Pin 11 IC509 + Pin 11 IC510
Pin 71 - Pin 12 IC509 + Pin 12 IC510
Pin 72 - Pin 13 IC509 + Pin 13 IC510
Pin 73 - Pin 14 IC509 + Pin 14 IC510
Pin 74 - Vcc
Pin 75 - GND
Pin 76 - Pin 16 IC509 + Pin 16 IC510
Pin 77 - Pin 5 IC509 + Pin 5 IC510
Pin 78 - Pin 1 Q307
Pin 79 - Pin 2 Q606 + Pin 1 R633
Pin 80 -
Pin 81 - IC504 Pin 9 Pin 10 Pin 11
Pin 82 - Pin 14 IC502
Pin 83 - X601 Pin 1
Pin 84 - X601 Pin 3
Pin 85 - GND
Pin 86 - Pin 7 IC502
Pin 87 - Pin 6 IC502
Pin 88 - Pin 5 IC502
Pin 89 - Pin 4 IC502
Pin 90 - Vcc
Pin 91 - GND
Pin 92 - Pin 15 IC502
Pin 93 - Pin 16 IC502
Pin 94 - Pin 3 IC304 + Pin 2 R310 + Pin 8 IC518 + Pin 2 D306
Pin 95 - GND
Pin 96 - Pin 46 IC105 + Pin 4 RA503
Pin 97 - Pin 45 IC105 + Pin 3 RA503
Pin 98 - Pin 44 IC105 + Pin 2 RA503
Pin 99 - Pin 43 IC105 + Pin 1 RA503
Pin 100 - Pin 42 IC105 + Pin 4 RA504
Pin 101 - Pin 41 IC105 + Pin 3 RA504
Pin 102 - Pin 39 IC105 + Pin 2 RA504
Pin 103 - Pin 38 IC105 + Pin 1 RA504
Pin 104 - NC
Pin 105 - Pin 4 RA502 + Pin 21 IC103
Pin 106 - Pin 2 R630 + Pin 1 RA505
Pin 107 - Pin 86 IC105 + R under IC103
Pin 108 - Pin 88 IC105 + R under IC103
Pin 109 - Pin 6 P404 + R under IC103
Pin 110 - Pin 24 IC103 + Pin 20 IC104
Pin 111 - Pin 2 RA505 + R under IC103
Pin 112 - GND
Pin 113 - Pin 1 RA501 + Pin 17 IC104
Pin 114 - Pin 4 RA501 + Pin 2 R524
Pin 115 - Pin 1 R549
Pin 116 - Pin 2 RA501 + Pin 2 R526
Pin 117 - Pin 3 RA501 + Pin 1 R525
Pin 118 - Pin 2 RA502 + Pin 1 R522
Pin 119 - Pin 1 RA502 + Pin 1 R523
Pin 120 - GND
35
TG/PCE Repair/Mod Discussion / Re: Composite interference? White PCE in briefcase
« Last post by Keith Courage on March 30, 2024, 07:22:53 PM »
That looks like a generic power supply interference. What power supply are you using?
36
TG/PCE Repair/Mod Discussion / Re: Super Cdrom2 RGB mod
« Last post by Keith Courage on March 30, 2024, 07:22:11 PM »
The RGB signals in all PC engine/turbo systems need to be amped. The signals are just not strong enough to be used straight to any TV or upscaler.

https://www.ebay.com/itm/126245283711?chn=ps&norover=1&mkevt=1&mkrid=711-117182-37290-0&mkcid=2&mkscid=101&itemid=126245283711&targetid=1529493975022&device=c&mktype=pla&googleloc=9016213&poi=&campaignid=19851828444&mkgroupid=145880009174&rlsatarget=pla-1529493975022&abcId=9307249&merchantid=114729822&gad_source=1&gclid=Cj0KCQjw8J6wBhDXARIsAPo7QA-bw-Ih_A1UCGs1agHqMHFvtUUyayKdBoePDwL8UKfZqC1Z4r_zvjAaAjI6EALw_wcB

or

https://voultar.com/index.php?route=product/product&product_id=53
37
TG/PCE Repair/Mod Discussion / Re: Composite interference? White PCE in briefcase
« Last post by majors on March 28, 2024, 08:46:35 AM »
Quote from: opticalnoise on March 23, 2024, 12:55:50 PM
I cleaned the PCB carefuly with ISO 99% and Q-tips and got quite a bit of brown residue but no obvious signs of damage, no visibly bad caps, etc. The only thing I haven't done is open up the IFU itself.
Obviously the "brown goo" was holding the video signal together :) <jokes>

If you opened up the PCE, maybe a wire got bent or too close/touching some component causing interference. I know it's pretty tight inside the white PCE and Cores. Maybe you could pop the case apart again and hook it up to the briefcase to see if moving the case flexing the ribbon cable makes a difference.
38
Console Chat / Re: Your Daily Dose of Gaming.
« Last post by majors on March 28, 2024, 08:37:49 AM »
Quote from: roflmao on March 20, 2024, 10:53:05 PM
Lately I've been sucked into Castlevania:SotN again.
Brothers from a different mother! I too had recently played through SotN on my Chinese handheld. Those medusa heads in that "gear" room with the water STILL drives me mad. (the location where you have to hit the 4 gears till they "click" to open the secret passage). After getting an ending, I've been trying out the plethora of Gameboy games on the handheld.

After messing with the RMenu Kai update to the ODE's, I started playing Powerslave. Originally, I just wanted to test the new software, but 4 weeks later, I'm still playing through it. I find the game to have great balance and pacing along with impressive performance for a 3D game on the ole Saturn.
39
PC Engine/SuperGrafx Discussion / Re: Awesome pce games that no one plays.
« Last post by Escaeva on March 28, 2024, 02:31:13 AM »
Basted :P

http://www.pcengine.co.uk/HTML_Games/Basted.htm

Really an underrated gem.

40
PC Engine/SuperGrafx Discussion / Re: Thoughts on Macross 2036 and Macross Scrambled Valkyrie
« Last post by Escaeva on March 28, 2024, 02:26:02 AM »
Macross 2036 is for sure one of the underrated shooters on the PC Engine. Been playing on the Duo as well, so great.

It's pretty pricey these days though  :-[
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