Tascam 22-4 Track 1 Won't Record

[MarkC]

This is for anyone who is familiar with this Reel to Reel model. Track 1
will playback but won't record. All other tracks record & playback. I
lost the ability to record on track 1 after connecting a tube pre-amp to
the track 1 input. When I try to record on track 1 I get input to the VU
meter & can monitor via the headphone jack. If I turn up the output
volume to the maximum I can hear a faint recorded signal. It looks like
the record tape head preamp xisistor or IC may have blown out. I don't
have the service manual but I'll see if I can get one. Thanks for any
advice.
Mark

 

[Jerry G.]

A possible stupid question: Did you do a good head cleaning on the tape
machine?

If you can get a scope, check to see if you have signal going to the head
during record, and see if you can work your way back along the signal path
to see where the failure is.

--

Jerry G.
==========================


This is for anyone who is familiar with this Reel to Reel model. Track 1
will playback but won't record. All other tracks record & playback. I
lost the ability to record on track 1 after connecting a tube pre-amp to
the track 1 input. When I try to record on track 1 I get input to the VU
meter & can monitor via the headphone jack. If I turn up the output
volume to the maximum I can hear a faint recorded signal. It looks like
the record tape head preamp xisistor or IC may have blown out. I don't
have the service manual but I'll see if I can get one. Thanks for any
advice.
Mark

 

[arcadecalgary]

i would look at the record head its self , I had a sony 4 track reel to reel
that did the same thing and i ended up replacing the record head

 

[Matti Adolfsen]

A possible stupid question: Did you do a good head cleaning on the tape
machine?

If you can get a scope, check to see if you have signal going to the head
during record, and see if you can work your way back along the signal path
to see where the failure is.

And check, if there is bias going to the record head (in fact, the bias
voltage is higher than the recording current when measured with an
oscilloscope).

In most recorders, the level meter monitors the record amp output, so
you get an indication if the amp is working. loss of bias or head
wear/clogging/misalignment might be the usual suspects, if level meter
shows OK. Did you calibrate the playback channel first?

Matti