10/31/2023: Localization News - Dead of the Brain 1!
HuMan you replaced the caps with the same type of surface mount caps as the originals?
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No, NOT a trick, a Halloween treat! Presenting the Dead of the Brain 1 English patch by David Shadoff for the DEAD last official PC Engine CD game published by NEC before exiting the console biz in 1999! I helped edit/betatest and it's also a game I actually finished in 2023, yaaay! Shubibiman also did a French localization. |
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#2
Console Repair/Mod Center / Re: PCE Duo - No Sound
10/08/2016, 07:13 PM
HuMan you didn't replace all of your caps? I think this is related to at least some of your problems. When I cut my caps off (i replaced all of them), there were at least 3 bad ones with leaking acid/corrosion underneath of them. All of these 3 caps looked completely normal until I removed them.
#3
Console Repair/Mod Center / Re: 2x Turbo Duo's completely Recapped - same problem low sound!
10/08/2016, 12:10 PM
Duo #1
1. I have jumpered power / gnd on all 4 op amps = no success
2. taken　all 4x op amps off cleaned check the vias underneath the one = no success
3. checked the power at all op amps it is is 8.9v approx
When my sound is working the other pins on the the 1 op amp (top of board left top coner by av) is giving 3/5v approx on other pins other than ground. when the sound drops these voltages are approx 0.6v approx
Result at this point=
The sound amplification circuit is faulty and seems more faulty when the cd-rom games play (this could be be false by saying this. its just faulty). It cuts out and very low or sometimes scratchy sound. It must be the amplification circuit turning on and off.
If I could just jump the sound into another amplification circuit I make. Possibly buy one off of ebay that would be awesome. I would not know which one to buy or how to create this one with which parts. Does anyone have any other ideas?
1. I have jumpered power / gnd on all 4 op amps = no success
2. taken　all 4x op amps off cleaned check the vias underneath the one = no success
3. checked the power at all op amps it is is 8.9v approx
When my sound is working the other pins on the the 1 op amp (top of board left top coner by av) is giving 3/5v approx on other pins other than ground. when the sound drops these voltages are approx 0.6v approx
Result at this point=
The sound amplification circuit is faulty and seems more faulty when the cd-rom games play (this could be be false by saying this. its just faulty). It cuts out and very low or sometimes scratchy sound. It must be the amplification circuit turning on and off.
If I could just jump the sound into another amplification circuit I make. Possibly buy one off of ebay that would be awesome. I would not know which one to buy or how to create this one with which parts. Does anyone have any other ideas?
#5
Console Repair/Mod Center / Re: 2x Turbo Duo's completely Recapped - same problem low sound!
10/07/2016, 04:40 PM
When people say wash what do you mean exactly? wash with what? remove all caps and wash? Leave everything on the board and wash?
#6
Console Repair/Mod Center / Re: 2x Turbo Duo's completely Recapped - same problem low sound!
10/01/2016, 12:14 PM
1. How exactly would I go about checking via continuity is there a video or can you explain it?
2. Where is the sound output found on the board before it enters the amplification portion of the circuit (op amp?) of the sound happens? Can someone provide a picture?
3. Is there a way to jump the output sound that is NOT amplified into a new alternative circuit (separately created) eliminating the cleanup of the leaky acid and boosted the sound. if so can anyone suggest a circuit spam and how I would attach it to the output?
4. Does anyone have a schematic of the amplification circuit drawn out that they would share so I could easily trace back through the circuit?
Really appreciate the help everyone. I thought it shaping all the caps in a very clean organized precise manner would fix the issue. Its really touch and go because of the leaky caps...
2. Where is the sound output found on the board before it enters the amplification portion of the circuit (op amp?) of the sound happens? Can someone provide a picture?
3. Is there a way to jump the output sound that is NOT amplified into a new alternative circuit (separately created) eliminating the cleanup of the leaky acid and boosted the sound. if so can anyone suggest a circuit spam and how I would attach it to the output?
4. Does anyone have a schematic of the amplification circuit drawn out that they would share so I could easily trace back through the circuit?
Really appreciate the help everyone. I thought it shaping all the caps in a very clean organized precise manner would fix the issue. Its really touch and go because of the leaky caps...
#7
Console Repair/Mod Center / 2x Turbo Duo's completely Recapped - same problem low sound!
09/18/2016, 08:41 PM
I have repaired 2 x Turbo Duo's with sound issues.
Turbo Duo 1:
I did the full cap replacement because this unit's cd-rom was faulty. After opening the unit it was clear that the audio caps were leaking. I changed all of the caps on the pcb. Now the sound was great but I had graphic font errors (example the copyright text under games title screen showed up which scrambled characters). This was very odd. I left the unit on the floor for a month.
I turned it on a month later and the graphic glitches were gone but now the audio was popping and it lasted about 2 min and disappeared. There appeared to be no audio after that. I tried re-soldering all caps again. Now I can hear the audio only when the volume it turned up max on my stereo on both hucard and cd-rom games.
Turbo Duo 2:
I cleaned the 2nd PCB really good and it seem to work great with all caps replaced for about 5-10 minutes and then the sound started popping and after about 2-5 min of the popping there seemed to be no audio. I turned my stereo up to max and I can faintly hear it play the audio now.
Seems like I am having the same problem on both Turbo Duo's. Does anyone know what this could be or where I could look for the problem example which capacitor or at the opamp or can I solder to pads somewhere else on the PCB. I have been looking all over the PCB and the op amp. no luck yet.
Does anyone have any ideas or suggestions?
*Update I have noticed popping on both Turbo Duos now*
Thanks
Turbo Duo 1:
I did the full cap replacement because this unit's cd-rom was faulty. After opening the unit it was clear that the audio caps were leaking. I changed all of the caps on the pcb. Now the sound was great but I had graphic font errors (example the copyright text under games title screen showed up which scrambled characters). This was very odd. I left the unit on the floor for a month.
I turned it on a month later and the graphic glitches were gone but now the audio was popping and it lasted about 2 min and disappeared. There appeared to be no audio after that. I tried re-soldering all caps again. Now I can hear the audio only when the volume it turned up max on my stereo on both hucard and cd-rom games.
Turbo Duo 2:
I cleaned the 2nd PCB really good and it seem to work great with all caps replaced for about 5-10 minutes and then the sound started popping and after about 2-5 min of the popping there seemed to be no audio. I turned my stereo up to max and I can faintly hear it play the audio now.
Seems like I am having the same problem on both Turbo Duo's. Does anyone know what this could be or where I could look for the problem example which capacitor or at the opamp or can I solder to pads somewhere else on the PCB. I have been looking all over the PCB and the op amp. no luck yet.
Does anyone have any ideas or suggestions?
*Update I have noticed popping on both Turbo Duos now*
Thanks
#8
Console Repair/Mod Center / Re: PC Engine Duo, No Video after cap kit
09/18/2016, 08:25 PM
Saved my ass with this. THANK YOU!
#9
Buy/Sell/Trade / Re: Turbo/PCE/Genesis/SNES RGB to Component Video (YPbPr) Mod Chip Now For Sale!!!
09/18/2013, 12:50 PM
I was trying to purchase one of these Component boards from your website but there is no option to ship to Canada. Do you ship to Canada?
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