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Old 07-25-2011, 09:58 PM
tonepub's Avatar
tonepub tonepub is offline
Serious Tapehead
Join Date: Sep 2010
Location: Portland, Oregon USA
Posts: 125
Any Nak 550 owners here?

Hi there:

Trying to get my 550 running and I've got tape movement but no meter movement...

Seems like I'm doing something obviously stupid wrong.

Any suggestions?

Thanks in advance!
Publisher, TONEAudio Magazine
Old 07-25-2011, 10:41 PM
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jdurbin1 jdurbin1 is offline
Tandberg fanatic
Join Date: Jan 2010
Location: San Diego
Posts: 2,068
I've got a couple but haven't worked on them yet, though I've repaired a few 250's and 350's which should be the same mechanism.

When you say "no meter movement", do you mean the level meters or the tape counter? If it's the level meters, are you playing a known good tape, trying to record, or?

Old 07-25-2011, 10:56 PM
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Tapetech Tapetech is offline
Repair Professional
Join Date: Dec 2010
Location: Washington DC area
Posts: 3,975
Are you getting sound output if you play a tape?

What happens if you try to record?
Old 07-26-2011, 03:11 AM
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HeadGap HeadGap is offline
Serious Tapehead
Join Date: Jun 2011
Location: Phoenix, Arizona, USA
Posts: 4,626
How long has it been sitting since the last time it worked OK?
Nakamichi: 550, BX-2 (silver), CR-3A & T-100 Audio Analyzer
Realistic: SCT-30, SCT-31, SCT-32 & SCT-33
Sansui: D-570.
Looks like some sort of secreted resin. Yeah, but secreted from *what*?
Old 07-26-2011, 10:34 AM
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Nakdoc Nakdoc is offline
Highly Biased
Join Date: Nov 2008
Location: Nashville, TN
Posts: 6,638
550s suffered from loose connectors. They were gold plated so they did not corrode, but they often would relax their tension.
Another possibility is the head penetration is insufficient to bring the deck out of mute. Try putting a recordable tape in and record the level test tone (button on rear). Tell us the results please.
Old 07-26-2011, 10:36 AM
tonepub's Avatar
tonepub tonepub is offline
Serious Tapehead
Join Date: Sep 2010
Location: Portland, Oregon USA
Posts: 125
Actually just got it back from Willy Hermann for a full overhaul. Figured I was forgetting to push a button or something. No output on the headphone jack and the meters don't move.
Publisher, TONEAudio Magazine

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