Casio EV-680 led mod

goodie · Post by **goodie** » Wed Feb 02, 2005 11:44 am

I have the Casio EV-680 Tv, and am going to do the led mod on it. I looked at the pageon Ben's old site on how to do it. But I am having trouble locating the inverter on my Tv. Can anyone help me out?

Post by **SpongeBuell** » Wed Feb 02, 2005 11:49 am

look for a "caution high voltage" label or something. Also, it's probably in a shielded box or something

goodie · Post by **goodie** » Wed Feb 02, 2005 12:00 pm

Yeah, I see a Caution: High Voltage thing on the top board. And there is a metal box there as well. So when I open the box, will I be able to just pull the inverter out? Or is it soldered in or something? I wonder if its safe to solder in a high voltage area.

HK-47 · Post by **HK-47** » Wed Feb 02, 2005 12:33 pm

Post a pic of the board and we'll be able to help you out.

goodie · Post by **goodie** » Wed Feb 02, 2005 1:25 pm

I tried to take pictures of it, but they didn't turn out very well (stupid cheapie camera!

) I'll put some up when I get a chance to use the scanner.

HK-47 · Post by **HK-47** » Wed Feb 02, 2005 1:27 pm

Ok, Ill be waiting. Post the crappy pics anyway, maybe we'll be able to se something.

goodie · Post by **goodie** » Wed Feb 02, 2005 3:44 pm

Like I said they are really bad:

HK-47 · Post by **HK-47** » Wed Feb 02, 2005 4:10 pm

Hmm.. Not sure how much you can do. Looks like its intergrated right into the board... Also cutting the inverter is only to save space, once you remove the bulb it stops sucking power.

goodie · Post by **goodie** » Tue Feb 08, 2005 11:01 am

http://benheck.com/Games/Step by Step Hacking.htm wrote:Once the bulb is out, put the LCD screen back in if needed. Then, stick a white LED in each end of where the bulb was. This simulates the bulb. Use hot glue to secure the bulbs in place.

I don't have a hot glue gun. Is there an alternative to using hot glue?

Post by **SpongeBuell** » Tue Feb 08, 2005 12:57 pm

they usually have them at the dollar store cheap enough (not sure how much, though

)

goodie · Post by **goodie** » Tue Feb 08, 2005 1:48 pm

Oh, okay.

goodie · Post by **goodie** » Tue Feb 08, 2005 4:32 pm

I just finished the led mod, but the picture seems rather dark. Anyone know what could be wrong?

Post by **Triton** » Tue Feb 08, 2005 4:41 pm

how many leds you using? mebe they arent getting enough power to be really bright? how dark is "rather dark"? lol dont know how much help i can be here but figured i would post anyway

HK-47 · Post by **HK-47** » Tue Feb 08, 2005 5:02 pm

Are you sure you didnt put resistor with the wrong value in?

goodie · Post by **goodie** » Tue Feb 08, 2005 7:45 pm

I'm using 2 LEDs. I used 2 10ohm resistors. Also, I don't know if it would make a difference, but I am using Ni-MH's, so the voltage is 4.8 instead of the normal 6 volts. But it was plenty bright with the original bulb, so I don't think it's the batteries.