I just want to know how the circuitry works for example in a tv, vcr, dvd combo... I know there are separate components but is it all controlled off one board? I'm always tinkering with things here and there and I picked up this 27" crt television combo from my uncle. It looks like a vega but it's a toshiba, specifically a MW27FN1(-R) . I have a little project I'm working on and this tv is pretty much shit. They were trying to move it and dropped it on the corner and cracked the casing. The screen has about 5 vertical lines at the top couple inches.. but I'm interested in the speakers in it and whether or not there's something in there I can take out that can be powered, accept an audio imput, and have an output for those speakers without it being half of what's inside the thing. I have a nice home theater that works great, this is for something I'm making and it would be really cool if I could use those parts. If not there's nothing else of any value there to me and I'm going to take it down to the street. I appreciate any helpful input.

1/10/2013 3:18:48 AM

just be sure to discharge that huge capacitor in the back of the tube before you fiddle with anything else

1/10/2013 7:56:39 AM

I appreciate that... I haven't taken it apart yet. I watched some videos on discharging the capacitors. If I had found out a way to do what my project needs I would have probably started tinkering around with it without discharging them. You may have saved me from a pretty big bite from one of those caps. Some of the videos I watched showed people taking out the boards. None of them really explained the reason for which they're taking it out. I got to thinking, if I had to use that whole board and I was using it for it's audio and speakers... how would I even switch it to one of the inputs without having the tube connected displaying the menus and without being able to see the result of the buttons I have pushed. I don't think there's a way I'm going to win with this so I may just toss it. I'm gonna check back a few more times just to see if anyone else has anything to say. Who knows, maybe it could be done. Anyway thanks again for your response.

1/10/2013 9:14:15 AM

It probably can be done, but you're talking about needing a fairly good understanding of integrated circuits and electronics design.

If you wanted to remove the speakers and amplifiers and scavenge other parts to rebuild an amplifier, that could be done by following online guides.

1/10/2013 9:43:34 AM

If you crack it open and maybe just google the numbers on the chips, you could get a good ways in figuring out what's going on.

1/10/2013 9:44:38 AM

I have never messed with one. I have a pretty nice but older Sony Trinitron 27" flat panel TV that has a power board or something going bad. It gives a red blinking light error, but will still turn on, with persistence. Sometimes takes 5-10 minutes of cycling the power button. But I got a replacement flatscreen HD set for Christmas, so I think I'm just gonna toss it. I hate throwing this big bitch away, but nobody wants to service it and I don't know anything about servicing it. If you wanted to play with it, you could come pick it up and have it.

1/10/2013 10:28:42 AM

Quote :

"have an output for those speakers without it being half of what's inside the thing"

Yeah, that's not happening. Audio switching and amplification is almost always integrated fully into the main board. Breaking it out would require powering that whole board and be a nightmare in general . . . . not to mention silly, since integrated speakers suck. A $10 pair of amplified computer speakers would be better.

Nighthawk: probably capacitors on the power board. Unless they're really big or nice CRTs just aren't worth repairing nowadays, I'd toss it.

1/11/2013 11:00:06 PM