Aug 27, 14, , 9, Since you have the main unit you should be able to check which contacts in the cable handle power by measuring them there. I suspect the voltage will be DC. An optical to analog converter isn't expensive.
If you can get it powered up then that will simplify things. Might sound better too. You must log in or register to reply here. Audio 1 Nov 2, Hacking Car Stereos Hacked Nomads? Post thread. Laptop Tech Support. Laptop General Discussion. Moderators online. Tom's Guide is part of Future plc, an international media group and leading digital publisher. Visit our corporate site.
All rights reserved. England and Wales company registration number Top Bottom. But I'm new to this and don't know all the shorthand, The chip is a mediatek mtkqe. I1m working on this media player that has not dvd drive, just a memory card slot and two 3,5mm jack AV input, but it cant recognise any signal.
Then I tried that you did, i took apart and found the IR3Y29B processor, and the wire for it, but the wire cant recognise any signal too. Could soeone help me out what could be the problem? Reply 5 years ago. Thanks for sharing. I can only find the data sheet with feature descriptions that clearly indicated that there is video input but I could not find any literature on the schematic.
Any idea on how to identify the pins or the schematic would be much appreciated. I'm working on a portable dvd player myself, however, I'm stuck. It looks like the connections go straight from the mainchip right into the lcd. I'll post some pictures if you or someone else could help me out.
Reply 6 years ago. I am attempting a similar project. Reply 6 years ago on Introduction. Vendors Market Vendors Bazaar. Log in. Search Everywhere Threads This forum This thread. Search titles only. Search Advanced search…. Everywhere Threads This forum This thread. Search Advanced…. More options Share this page Share this page Share. Find Posts New Posts. We used to do this by winding them on a cylindrical core like a nail, having the winding start at one end and ending at the other then the wires soldered into a circuit board would hold it in place.
For finer winding wire we covered the inductor over with paraffin. Candle wax is paraffin with a hardener added so candle wax would be even better than paraffin. Also an op-amp can be configured as an integrator. An integrator converts a symmetrical square wave to a symmetrical saw wave and it converts a symmetrical saw wave to a sine wave.
It does this extremely accurately and this type of circuit was used in test equipment like noise and distortion meters because the end sine wave is very clean and at the same time you can have a large sweep frequency because your starting with a digital square wave. Point being that sine and saw waves sound much better than square waves for a musical instruments. Please be kind and respectful to help make the comments section excellent.
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