Twin Famicom modding, etc.

[Xious]

I suppose all that gives me more reason to keep the Twin.

The Twin is easily my favourite console of all-time: It offers the best of both the FC and the FDS in one unit, with a simple toggle-switch to select the mode, all in a highly-attractive package. 

@eBay Junkie: I strongly advise getting used to reading pinouts before you try to do this. It isn't hard, and you really won't find a photo-guide to doing this, as most of the people that attempt it have at least a minimal technical background and are used to reading pinouts and schematics... Honestly, the easiest solution for you will be to buy a Famicom of some kind, as even when done correctly, this process leaves much to be desired. The HES Unidapter is your second-best solution, but still requires a deal of modification to permit the extra-sound: At the least, that way you don't need to hang the RAM-Adapter off the front of a de-capped NES like a grafted limb.

[ebay junkie]

well  what size transistor  and what size resistor do i need and where can i find them  idont have enough money to buy a famicom so i need to mod my nes and where might find them and thanks for you help again
Post Merge: April 11, 2011, 04:07:40 pm
i have not soldered any thing but picups  for guitar and electronics are new to me so what can i take apart to find the right  resistors and transistors thank you

[Xious]

No transistor required. You will need a 1uF capacitor, and a resistor between 10K and 100K if memory serves. I don't know the exact value off-hand... I'm not dure it has ever been positively determined: You can substitute a trimmer-resistor so that you may adjust it. I suggest these:

No.1: 62MR10KLFO
No2.: T7RYB104KT20

I's advise reading the datasheets, but you may get very lost quite rapidly. The first part is generally set to 10K and can be trimmed up and down between 1Ohm and 1,000,000Ohm (1MOhm). The second is set at around 100K and can be trimmed to 47K safely (at 5DVC). I'd really advise the first part, and there are numerous other choices.

The only problem is that trimmers like these generally have a ±10% to  ±20% tolerance, the higher you set the value, the higher the tolerance, but on the positive side, they permit you to tune the resistance to the ideal value without swapping out soldered parts.

I could also make you a board to plug into the bottom expansion slot on your NES that does all of what you need on the NES itself for around $55: It's very labour-intensive to make the connector. It would be somewhat like my NESpander project, but would only have the audio mod parts on it. The price you pay for simplicity, and later expandability so that you needn't modify the NES itself may be worthwhile to you.