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Author Topic: MP-3 TV tuner  (Read 5298 times)

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Offline Bryce

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Re: MP-3 TV tuner
« Reply #25 on: 22:15, 07 May 17 »
I really don't know why amstrad made diferent tv turners boards. He can be manufacture easily a pal/secam compatible mp-3.

It was a UK computer that was aimed at Europe with notions of conquering the US and came with its own monitor anyway. PAL was used by 95% of Europe and the US was 100% NTSC, why would they spend even a cent on expanding the design to include something as obscure as secam?

Bryce.

Offline Token

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Re: MP-3 TV tuner
« Reply #26 on: 03:33, 13 September 17 »
I have no idea of how modify my nes clon to RGB :D




Anyway talking about strange and impossible  options.


The pal versiĆ³n is based in the an5620x chip + an5612


The secam uses a an5630x +an5612. The An5630x have switch to support pal/secam automatically. But i think he need the  an5622 to decode de pal colour between an5612 and an5630x


I really don't know why amstrad made diferent tv turners boards. He can be manufacture easily a pal/secam compatible mp-3.

I've seen that the pins are different 16 vs 24, but would it be possible to swap the an5630x with a an5620x in the french MP-3? All pins are needed?..

What I want is to use the C64.
Strangely the boot works very well, all in color on the CTM644 & french MP-3, but it turn b&w when running games. So I'm using the PAL MP-3 with RF, it's not too bad with small cable. It's a bit annoying to tune sometime..
I used a 9V battery for b&w composite, but maybe the C64 have it, or it is possible to find it somewhere on the MP-3 PCB to make an AV mod with a little AV/RF switch?


Offline dragon

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Re: MP-3 TV tuner
« Reply #27 on: 12:32, 13 September 17 »
In priceminister at times is  possible buy a sony pal/secam adapter only for video. Is a crappy solutiom anyway.

http://www.priceminister.com/offer/buy/2438987/Sony-VMC-2102F-Transcodeur-Pal-Secam-SFR-1000K-cordons-Camescope.html


I think amstrad use the reference desing for the ics. I not sure if is easy as swap chips, The expert in hardware was bryce, maybe he know if can be transformed in pal,make a switch of something obscure alternative modification. :)






Offline Bryce

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Re: MP-3 TV tuner
« Reply #28 on: 13:23, 13 September 17 »
In priceminister at times is  possible buy a sony pal/secam adapter only for video. Is a crappy solutiom anyway.

http://www.priceminister.com/offer/buy/2438987/Sony-VMC-2102F-Transcodeur-Pal-Secam-SFR-1000K-cordons-Camescope.html


I think amstrad use the reference desing for the ics. I not sure if is easy as swap chips, The expert in hardware was bryce, maybe he know if can be transformed in pal,make a switch of something obscure alternative modification. :)

Point me to the schematics and I'll tell you what's possible.

Bryce.

Offline dragon

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Re: MP-3 TV tuner
« Reply #29 on: 14:55, 13 September 17 »
Point me to the schematics and I'll tell you what's possible.

Bryce.

Not exist schematic for french version, only the pal in the admnent service manual.

The observations i made i these day, was comparing pal schematics with ic reference desing from manufacturer and little look in live  french mp-3.

http://www.cpcwiki.eu/manuals/Amendment%20Service%20Manual.zip

But hey, if you want take the hardware project of made a mp-3 french accept pal/secam signals in the scart and rgb. I can send my french mp-3 to you. So you can work with the hardware and document it.

Only please tries to return me it alive after modify it,i only have one :).


Offline Bryce

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Re: MP-3 TV tuner
« Reply #30 on: 15:36, 13 September 17 »
Remind me about this again when my workload is less (around December).

Bryce.