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Turntable Issue

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Turntable Issue

Unread postAuthor: MrCrowley » Sat Mar 01, 2008 7:55 pm

I bought a 1979 National turntable off and auction site for $30 :) If you don't already know, National is made by Panasonic who makes technics, so it's a damn fine system.
Image

Anyway, I got home and tested it, and worked perfectly, the turntable, tape deck and radio.

The next day I wake up, go to use it, tape deck is fine, same with radio, but the turntable is only playing sound through the left speaker, I plug in my headphones, same thing, left speaker only.

I don't remember bumping the stylus, it's brand new and the cables look fine, so i'm thinking it's the pre-amp, but I have no idea how to get to it, how to identify it and how to fix it.

Any suggestions?

Thanks.

BTW some of you may remember a problem I had with my stereo awhile back, well turned out it was a shotty cable all along... :roll:
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Unread postAuthor: jrrdw » Sat Mar 01, 2008 8:00 pm

See if there is 4 little wires on the needle arm just behind and above the head that holds the stylus. If there is, more then likely there will be a short in 1 of those wires. Wiggle them a little and try it again. They are color coded for the left and right channel's.
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Unread postAuthor: MrCrowley » Sat Mar 01, 2008 8:05 pm

There's a white, red, green and blue one. I'll give it a try now. :)
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Unread postAuthor: pizlo » Sat Mar 01, 2008 8:06 pm

I'm don't know much about turntables but my dad sure does, hes got around 3,000 records in the basement, mostly old Greek stuff. I am however making a ghetto surround sound in my room, I'll pot pics of it once I get the 200 dollar whoofer for free from my sisters friend.(they got it free with there uber speaker set, and don't need it.) Last night I found an integrated amp in my churches attic, and now I'm using that to power 2 huge ass panosonics from the 80's.
Well good luck.
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Unread postAuthor: MrCrowley » Sat Mar 01, 2008 8:08 pm

Jrrdw, It's having a lot of effect on the left speaker, making it quiter or louder, but not on the right speaker. Do you know which wires and for left and right?
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Unread postAuthor: jrrdw » Sat Mar 01, 2008 8:19 pm

If one is stripped it will be the + and the solid color will be the -. Disconnect one of them and see what side it discontinues. Then you will know what is left and right.
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Unread postAuthor: MrCrowley » Sat Mar 01, 2008 8:27 pm

None are striped and I seperated them as far apart as possible but still no right speaker. The wires cross over each other so it's hard to seperate them.
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Unread postAuthor: jrrdw » Sat Mar 01, 2008 8:33 pm

Me, I used a pair of needle nose pliers and pulled mine off one by one and very very gently squeezed the little tiny wire ends and put them on again. It mite also help wiggling the stylus around a little. When the manufacture put mine together the stylus wasn't inserted all the way, I pushed mine in a little and it was ether the wires or the stylus, but one or the other fixed mine. Many moons ago.
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Unread postAuthor: jrrdw » Sat Mar 01, 2008 8:42 pm

I just dug out my owners manual, the white and blue wires are the left channel. Blue is the ground. Green is ground for the right channel.
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Unread postAuthor: MrCrowley » Sat Mar 01, 2008 8:47 pm

Just rearranged the wires, still no go with the right speaker :?
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Unread postAuthor: jrrdw » Sat Mar 01, 2008 8:50 pm

Try pushing the stylus up into the head some more? What kind is it? My turn table is a Fisher and my head is a Audio Dynamics, I replaced the Fisher.
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Unread postAuthor: MrCrowley » Sat Mar 01, 2008 8:57 pm

I have no idea, the turntable appears to be a Gerrard. I remove the green and red wires, which had no effect so they must be right. The green wire looks a little dodgy I think it's not connecting with the metal bit.

They may be the problem, i'll try fixing that.
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Unread postAuthor: jrrdw » Sat Mar 01, 2008 9:06 pm

Yea, try giving them a little pinch to give them a better connection.
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Unread postAuthor: MrCrowley » Sat Mar 01, 2008 9:09 pm

The end of the greencable is sticking out of the plug that plugs it into the stylus, so I shoved it back in, and when plugging it back in, it comes back out. And there's not enough wire for me to strip off without cutting the plug off.
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Unread postAuthor: MrCrowley » Sat Mar 01, 2008 9:16 pm

Okay, still can't get it to work and when I screwed the arm back into place, it won't go far enough in (towards the middle) to play the last bit of the record, so if you play it, it will just keeping repeating as it can't go any further in without forcing it.
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