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Galloping sound

 
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randallkubin



Joined: 28 Feb 2008
Posts: 12

PostPosted: Tue Apr 21, 2015 1:35 pm    Post subject: Galloping sound Reply with quote

Hello. I recently picked up an RCA SJT 400 I won on eBay from the post office. I loaded a disc and have sound and picture... but there's a galloping sound that happens when the movie is playing. I recorded a video so you could hear it for yourself but I don't know how to upload videos here. I have heard that sometimes the disc sits too high or too low and you have to adjust it... how do I do that? Do you think that's what this could be? It seems like a possibility. It is constant and steady.

I should probably clean it up anyway. It looks pretty bad. I mean, good, for a 30+ year old electronic... but... I intend to restore it to close to new and give it to my sister.
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kitchensynch



Joined: 24 Feb 2013
Posts: 1087

PostPosted: Tue Apr 21, 2015 4:06 pm    Post subject: Reply with quote

We don't have that capability here-it's an older forums board version but many of the videos we post are through out eBay accounts.

Turn the TV audio down and determine if the sound is coming from the mechanism or a circuit first. You can put your ear to the player and determine that.
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blindfury420



Joined: 26 Jan 2011
Posts: 1036

PostPosted: Tue Apr 21, 2015 4:50 pm    Post subject: Reply with quote

Quite likely this is your problem.

http://www.cedmagic.com/tech-info/repair-solutions.html#dragging-turntable
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I dont own

McMicheal 5001h
Hitachi VIP202P
JCP 686-5705
RCA SKT265, SKT300
RCA SJT400X, SJT425
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SelectaVision420



Joined: 25 Mar 2012
Posts: 1424
Location: Hartford

PostPosted: Tue Apr 21, 2015 4:51 pm    Post subject: Reply with quote

where is the video now?
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(2)Sears 274 & 934(80150,10&11350), sft100, sgt250, sjt 090-400, vp550, VDR3000, VP2000 & 4000
complete '84 Dimensia Owner
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randallkubin



Joined: 28 Feb 2008
Posts: 12

PostPosted: Thu Apr 23, 2015 6:55 pm    Post subject: Reply with quote

https://www.youtube.com/watch?v=VLXXpjx3NLg
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RCA SJT 400
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blindfury420



Joined: 26 Jan 2011
Posts: 1036

PostPosted: Thu Apr 23, 2015 6:58 pm    Post subject: Reply with quote

Absolutely a low turn table, a quick adjustment will fix it! Follow the directions on the link I provided above!
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I dont own

McMicheal 5001h
Hitachi VIP202P
JCP 686-5705
RCA SKT265, SKT300
RCA SJT400X, SJT425
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randallkubin



Joined: 28 Feb 2008
Posts: 12

PostPosted: Thu Apr 23, 2015 6:59 pm    Post subject: Reply with quote

blindfury420 wrote:
Quite likely this is your problem.

http://www.cedmagic.com/tech-info/repair-solutions.html#dragging-turntable


The bottom of my player has the brass nut... I tried to give it a turn and it didn't want to give... Is it normally a tough turn? Cause it wasn't budging at all. I'm afraid I'll break it if I get on it much harder.
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blindfury420



Joined: 26 Jan 2011
Posts: 1036

PostPosted: Thu Apr 23, 2015 7:01 pm    Post subject: Reply with quote

randallkubin wrote:
blindfury420 wrote:
Quite likely this is your problem.

http://www.cedmagic.com/tech-info/repair-solutions.html#dragging-turntable


The bottom of my player has the brass nut... I tried to give it a turn and it didn't want to give... Is it normally a tough turn? Cause it wasn't budging at all. I'm afraid I'll break it if I get on it much harder.


Yep don't tighten that too much! There is a small hex screw inside of that to adjust! You need an Allen wrench for that.
_________________
I dont own

McMicheal 5001h
Hitachi VIP202P
JCP 686-5705
RCA SKT265, SKT300
RCA SJT400X, SJT425


Last edited by blindfury420 on Fri Apr 24, 2015 8:17 am; edited 1 time in total
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SelectaVision420



Joined: 25 Mar 2012
Posts: 1424
Location: Hartford

PostPosted: Fri Apr 24, 2015 6:31 am    Post subject: Reply with quote

i believe the allen screw is 2.5mm, the hex nut is a jam nut, so all you have to do is loosen the jam nut, and rotate the hex screw like 1/4 of a turn at a time until the noise goes away, if you put it too high it will ruin the disc and the stylus. make sure when you tighten the jam nut back its only snug and not super tight

also it sounds like it is lacking lubrication at the bottom of the turntable stem, there is supposed to be a tiny flat disc that is a spacer between the adjustment screw and the turntable spindle, often these get jarred loose in shipping and can cause this problem. i had a sjt300 new in box never used and it made this noise, and it just needed lube on the turntable stem where it rides on the washer atop the adjuster nut, so make sure to lube it before you put the turntable back in Smile
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(2)Sears 274 & 934(80150,10&11350), sft100, sgt250, sjt 090-400, vp550, VDR3000, VP2000 & 4000
complete '84 Dimensia Owner
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randallkubin



Joined: 28 Feb 2008
Posts: 12

PostPosted: Fri Apr 24, 2015 7:10 pm    Post subject: Reply with quote

That is good solid advice! Thanks! I'll let you know how it turns out when I can get around too it.
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randallkubin



Joined: 28 Feb 2008
Posts: 12

PostPosted: Fri Apr 24, 2015 7:45 pm    Post subject: Reply with quote

https://www.youtube.com/watch?v=2BB8qZoaVG4
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RCA SJT 400
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blindfury420



Joined: 26 Jan 2011
Posts: 1036

PostPosted: Fri Apr 24, 2015 7:50 pm    Post subject: Reply with quote

Sounds fixed!
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I dont own

McMicheal 5001h
Hitachi VIP202P
JCP 686-5705
RCA SKT265, SKT300
RCA SJT400X, SJT425
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SelectaVision420



Joined: 25 Mar 2012
Posts: 1424
Location: Hartford

PostPosted: Fri Apr 24, 2015 10:20 pm    Post subject: Reply with quote

randallkubin wrote:
https://www.youtube.com/watch?v=2BB8qZoaVG4


sounds happy! glad it worked out for you! Cool
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(2)Sears 274 & 934(80150,10&11350), sft100, sgt250, sjt 090-400, vp550, VDR3000, VP2000 & 4000
complete '84 Dimensia Owner
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randallkubin



Joined: 28 Feb 2008
Posts: 12

PostPosted: Sat Apr 25, 2015 5:05 pm    Post subject: Reply with quote

You guys are rock stars - Thanks again!

The SJT 400 is my favorite player... I fixed that one for my sister, and you might remember the guy I bought this one from had ANOTHER one, but it was broken. I feel confident enough now that I could probably make it run and have a 400 of my own.

Side question... which player would you think gives the best sound and video quality?

My grandparents owned a tv sales and repair shop back in the 70's and 80's. They had the BEST stuff at their house. As far as I know... the 400 was the top of the line unit. Seeing it today, it seemed about on par with VHS.

Honestly I'm not complaining, I like the character. I just wonder what the media was capable of.
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