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Old 5th Nov 2019, 12:55 pm   #2
Welsh Anorak
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Join Date: Apr 2005
Location: North Wales, UK.
Posts: 5,156
Default Re: Philips N4520 alignment problems

I think you've proved that the problem is with the record head. It's possible that it's worn to an extent there's crosstalk, though a close inspection should reveal that. Aligning a three-head machine is of course more difficult than on a two-header, but the idea is to get the playback head absolutely correct then, using off-tape monitoring, align the record head.
You can rule out the erase head by erasing a portion of tape and check it's completely blank.
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