Tape plays very quiet but test function works normaly

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Pioneer ct-f1000

Markus @edwardwonghau

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Posted: Apr 25, 2017

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Tape plays very quiet but test function works normaly

Hello, I am having problems with my vintage tape deck, I got the thing running with new belts but the audiotapes are extremely quiet, full volume on the deck and its just about audible that something is playing. The strange thing is that the test function of the deck works perfectly and nearly blew my ears of when I switched it on. So there is no problem with the main mosfets, and in general dead mosfets wouldn't result in quiet playback. Anyone got a clew? I'm a noob when it comes to tape equipment has it something to do with the play head?

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Have you tried other tapes with the same result?

Apr 25, 2017 by Cameron

yes, they are all extremely quiet :(

Apr 25, 2017 by Markus

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L Pfaff @lpfaff1

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Posted: Apr 25, 2017

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Markus , Find below some useful links, link #1 is a forum that trouble shoots your issue, 2nd link is the user manual and the other links are down loadable service manuals. Good luck. I hope this helped you out, if so let me know by pressing the helpful button.

http://audiokarma.org/forums/index.php?t...

http://audioklassiks.de/Bilder/Manuals/p...

https://elektrotanya.com/pioneer_ct-f100...

https://www.google.ca/url?sa=t&rct=j&q=&...

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Thanks a lot didn't find this post while searching myself, was just going through the service manual, but this probably will save me a lot of time :)

Apr 25, 2017 by Markus

Markus, thanks for replying back, good luck with your deck.

Apr 25, 2017 by L Pfaff

Just tested the headphone output of the deck but other than in the first post it does the same as the normal output, tape plays very quiet and test tone works fine. So it might not be a problem with the mute circuit.

Apr 25, 2017 by Markus

Fixed it! It was the mute of the Tape/Input switch, the Switch was stuck on the the Input position internally, so it worked after fixing the Switch. Amazing the thing still works without any electrical faults after 40 years! :)

Apr 25, 2017 by Markus

Markus, That's excellent your up and running! Good luck with your deck.

Apr 25, 2017 by L Pfaff

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Thanks a lot didn't find this post while searching myself, was just going through the service manual, but this probably will save me a lot of time :) — Markus
Just tested the headphone output of the deck but other than in the first post it does the same as the normal output, tape plays very quiet and test tone works fine. So it might not be a problem with the mute circuit. — Markus
Fixed it! It was the mute of the Tape/Input switch, the Switch was stuck on the the Input position internally, so it worked after fixing the Switch. Amazing the thing still works without any electrical faults after 40 years! :) — Markus
Markus, That's excellent your up and running! Good luck with your deck. — L Pfaff

Pioneer ct-f1000

Tape plays very quiet but test function works normaly

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