P'zioneer RT-70S'zeven

laatsch55

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#21
Had a brother that was a scuba diver when we lived in Riverside, Cal. He would bring home a sack full and dump them on the lawn. My sister and I would have to have a lobster roundup....good stuff...
 

orange

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#23
Mine needs brake work or something.
 
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#24
So, I guess I'll revive this old thread, wish it was with good news but I'm sure you guys can help out... So, My RT-707 which I revived a little while is having some trouble last time I played it. It was working great, as it always did before sitting a while. It was stored in the house, clean and dry. When I went to use it the rollers struggled to lift the tape but this was just gummy lube. After sorting that out it played and recorded wonderfully until a few months ago. While playing a tape that had been played before and was known to sound perfect, I lost most of one channel and a good bit of the other. Both were still there but muffled and weak, one more than the other. I seem to recall that unplugging the output on the weakest channel made the other sound better still not right. I also tried switching to a different tape input on my preamp with the same result. Any ideas guys?

Thanks

Andrew
 

Northwinds

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#26
Like Lee said, possibly dirty heads or maybe the roller is filthy. Might have been playing some old tapes w/ SSS (Sticky Shed Syndrome)??
 
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#27
Hey guys, I ran a cotton swab gently across them and they seemed very clean. The rollers and capstan are spotless also. The unit had been covered at all times when not in use so I don't think I'm so lucky as to only require a cleaning...

oh, forgot as its been a little while since I was messing with this... the signal problem does show on the VU meters with one channel only about 1/3 the output of the other.
 

laatsch55

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#29
There's a lot going on in that deck electronically......A LOT...and I don't know where to tell ya where to start...
 
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#30
Thanks guys, I did give the jacks a decent look and a couple twists on the plug with no change. They don't appear oxidized at all.

Lee, I had the bonnet up on her a while back and you're not kidding there's a lot goin on in there:?
 

Elite-ist

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#32
Also, check the output level controls on the back of the RT-707. Give them a good workout in each direction.

Nando.
 

orange

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#33
Microswitches, were you guys telling me as to why either my 707 or 909 broke down?

The other one had braking problems.
 
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#34
Thanks for the advice guys. I am not home with the unit right in front of me at the moment but will check all these things when I return. I did turn the output pots on the back Nando. They did increase or decrease the output, but the problem remained constant. There was no sign of dirty pots, dropping out or crackling. Also the VU meters becoming unbalanced makes me think its a problem between the heads and before the meters??? The recording level pots on the front which are coaxial with the Mic input pots were smooth also as I had recorded with the unit not long before the problem suddenly developed. Also the volume output on the front was smooth. A good cleaning never hurt though, but I think I have a more stubborn problem...
 

Skywavebe

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#35
If the simple stuff does not fix it then the electrolytics are next. These have been around for a long time and so there ain't no spring chicken there.
Maybe the heads are worn out but they usually do not change over night.
 
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