View Full Version : Please don't think I'm try'in to get somethin for free...


JB5pro
11-10-2008, 10:47 PM
I expect to donate money to AK at the very least but have been unable to so I should not get credit for wanting to until I actually do. Just stating what I intend to do and eventually I finish all I start but do not take my word for that. If I get no response to this I am completely understanding of that being appropriate.
However, since so many dear people have said it doesn't hurt to ask I will...
Hopefully somebody with advice could need something I could do for them like with parts or anything other than actual cash at the moment. I would give before recieving.
This photo is of an '89 Sony 27" that I took from the garbage a few months ago and the picture quality has been excellent. It was discarded because the sound comes on low and pop/scratchy til it warms up then it's basically listenable with the incorrect speakers it has rigged up inside.
Today I turned it on and nothing but a little machine gun sound that might go with those little green plastic soldiers. I tried it a couple more times and the same but stopped to where nothing happens. I will take back off to look for solder connections but I inspected it when I got it and I doubt that's it. I expect I will discard it but if anybody around here needs a premium condition CRT or the whole thing you are wellcome to it for free. The CRT's performance was very impressive to me as though the set has low hours.

MRX37
11-11-2008, 12:59 AM
Possible failure in the audio circuit? Are the speakers in there the right ohm rating at least? If they aren't, the audio circuit might be blown.

Also, test the speakers with an ohmmeter to see if they're blown.

freakaftr8
11-11-2008, 01:09 AM
Yes sounds like audio circuit took out the b+. What you were hearing could have either been the short causing b+ to back off to standby and the FBT trying to come up while the short in the audio circuit held the b+ off.

Just a guess.

JB5pro
11-11-2008, 01:17 AM
I have to take it apart to see but when I got the set the speakers were pretty much thrown in and not like the originals in size. I have no schematic so not sure of the proper ohms. With the advice given I suppose at the very least a power transistor is shorted or blown? I guess I'll try to check it with a meter and my wits and luck. Thanks for the advice guys:)
Johnny

Findm-Keepm
11-11-2008, 01:53 PM
KV-??? I have many Sony Service Manuals, and more importantly, Service Bulletins that address many of the common faults with Sony TV's - lemme know what the model is and I'll take a look.

Cheers,

JB5pro
11-11-2008, 09:58 PM
Thanks for check'n. I am a bit hesitant to take it apart because I suspect it will have a part I don't have. Would be great if someone could use this CRT for free. I hate to toss it.