Discussion in 'Modding and Hacking - Consoles and Electronics' started by FireAza, Apr 17, 2013.
Sounds like a damaged amp.
Would that cause the "blue screen of death" problem I'm having at the moment? Previously, before I connected the ground and 5v wires correctly, the game would still load, I just had no picture.
Shouldnt make any difference to the loading. Just the missing colour.
That's a bit of a worry. Any idea what would suddenly be the cause of this "blue screen of death"?
*EDIT* Got a replacement amp on the way BTW.
Okay, I've received the replacement amp and swapped it over. Same problem as before, only now it's a purple screen of death. Any clues? Everything seems to be securely connected.
I thought you guys over at the PC Engine forums would like that. Now if I could just get the console working...
Something must have shorted and I hope a chip didnt get fried
Any ideas what? I mean, the only parts you're soldering to the console itself are a few wires to solder points on the expansion slot, so there seems very few chances for something to short during the process.
Why do you need an amp? I have done this same mod just using the signals straight from the Hu C6260 chip and it works perfectly.
The signal levels are much lower than optimal. You also shouldnt directly connect the outputs of that chip to a TV, the amp acts as a buffer between the chip and the tv.
"Works" and "Correct" are quite different.
I've removed the RGB mode from the console, but I'm still getting a purple screen of death. Any tips guys?
Ordered those SOP8 adapters. They will be here next week and I'll jump into this mod myself.
Hope I can help you sort where the problem is while I'm doing it too, Fireaza.
Are you using my idiot's diagram, or can you read the original? If it's the former, use that diagram of the amp back a few pages to be sure you're feeding power and ground to the right legs, in my case I had them around the wrong way.
Yeah, I have a little bit of experience with the THS but I'll follow your diagram with minor modifications.
Well, I've re-done the mod today on a new PC Engine, and it works! I have no idea what went wrong with the original console, but installing the amp in a fresh console solved the issue.
Re-doing the mod also gave me the chance to take what I had learned from the first time and try something new. For example, last time I had trouble getting the video connector to center in the hole in the case. To solve this, I cut away the two plastic nubs that were preventing the connector from being positioned where I wanted it. And finally, I didn't stick one of the legs of the connector into one of the RF connector's holes, since this put the connector off-center. Instead, I positioned the connector where I wanted it and traced it's outline with a scalpel. This let me know where I needed to solder it for it to be in the center of the case hole Now everything looks perfect!
That's great to hear!
I did the mod on my PCE Duo a short time ago, the results are pretty spectacular. What a great little amp!
Nice! Did you use my idiot's diagram?
Nah, the schematic from the first reply (with the modified values listed underneath it) was easy enough to follow, and that's pretty much just a copy of what's on the amp chip's datasheet.
Your posts did encourage me to check, re-check and double-check everything before I powered it up though, so thanks for that!
Ha, at last it was useful in some way
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