casio tv hack

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geekdude
Posts: 2
Joined: Tue Mar 16, 2010 4:05 pm

casio tv hack

Post by geekdude » Tue Mar 16, 2010 4:21 pm

i got a casio tv-770 from the pawn shop today. its real small but it was only $2. does anyone know how to bypass the tuner and input straight video?

gamemasterful
Posts: 78
Joined: Sun Oct 11, 2009 1:39 am

Re: casio tv hack

Post by gamemasterful » Wed Sep 01, 2010 8:25 pm

I have the exact one, also bought for real cheap from goodwill. I've done some research on the web concerning the chips but so far any experimenting besides wiring an rf adapter to the external antenna adapter hasn't worked. And to be honest using the RF adapter is bulky (like the pcb for this tv isn't, compared to the screen), not to mention UN-power friendly. I'd like to bypass the RF altogether so that I can remove the tuner to save power. I've found RGB in on one chip but I also don't want to take apart a console that I don't want to portablize to see if it will work.

So yeah any help on this would be great.

But so far, here are the links to the chips of the tv.

http://www.datasheetcatalog.org/datashe ... Xtqqwt.pdf" onclick="window.open(this.href);return false;

Oki Japan 16 pin chip - C1169

http://pdf1.alldatasheet.com/datasheet- ... 042FP.html" onclick="window.open(this.href);return false;

gannon got this working but I don't the the model of tv was the same. And again, would like to remove the rf components completely. http://forums.benheck.com/viewtopic.php ... w=previous" onclick="window.open(this.href);return false;

8 pin chip - 2070 6076b jrc

m6625-02 6432b03 http://pdf1.alldatasheet.com/datasheet- ... TQ52B.html" onclick="window.open(this.href);return false; Not sure if it's an exact match...


And while this isn't the correct service manual for this model, it did outline the tepu5-02, which "Selects a desired radio wave and changes it to the video IF signal." Considering the size of the thing (roughly inch and a half by 3/4 inch by 1/8 inch) I would guess it draws a good bit of power, and would help with that problem if it was removed.

Replacing the cathode ray tube with two leds would also cut the power draw by a good amount as well.

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