Question about Personal Cassette Players
I bought this recorder new in 1990 and used it regularly for 6 years. Since 1996 it has stood on a shelf. Now, when I try to play or record, the play button doesn't work. The heads and pinch wheel no longer move into the cassette, although the wind and rewind facilities are working. The electronics are all okay, meters volumes EQs pans headphone monitoring etc.
Your suggestions would be welcome. I live near Eastbourne, East Sussex.
Frederick (Rick) Maskell
I noticed 3 belts in there and I replaced the easy one, the others look and feel fine, FF and REW work and move the drive posts, but the post doesn't move when on PLAY, the capstan and all 3 belts move, but the drive post doesn't move (the one that goes into the cassette wheels)
Posted on Jan 22, 2010
It's long past the original post date, but others might still stumble on this page in need of Tascam help. I had the same problem, FFWD and REW worked fine, but press play and it would automatically stop after 1-2 seconds on my Porta-One. I checked my belts and they were all fine, as well as the gears and grease. Just before I gave up, I noticed that there is a spring right under the recording head that was kind of flopping around. The spring is shaped like an L with the coils in the corner. The spring pivots on the coils and the short-side is pressed up on the inside of the black plastic piece that the record and playback heads mount to. The long-side of the spring contacts a white plastic arm and transfers the movement of the arm so the heads and pinch-wheel move forward. If the black plastic that the spring is in contact with has broken (which mine had), then the white plastic arm cannot fully move the pinch-wheel, heads and engage the take-up spindle. Thus, because the take-up spindle is not moving, the player thinks the cassette has reached its end and playback automatically stops. How I fixed it was not easy and I cannot explain since it was some MacGyver sh*t but that's what my problem was, so hopefully this is useful to someone and will give them something else to look for.
Posted on Sep 08, 2012
I have a Porta one, works like a champ, I also work with
Orange Sound of South Hadley owned by Greg Dwinell, a Tascam Service
center for all the east coast.
Your problem sounds like the drive belt dried out and broke, (same has happened to me). Simple solution is open it up and check the belt. Tascam belts are still available, call Greg @ 413-533-0900
In the interim, use the small rubber band from u'r newspaper (acts just as well as a belt) to hold u over.
Best regards, Steve - StarrysWorlds - MarSayHarrington Associates (413) 533-9972
Posted on Dec 16, 2009
Twidget111 here, I had to take it to a technician and found out
I had a broken belt in it and the main drive belt was stretched out of shape. Solution replace both belts plus the fact the unit is 20+
years old good luck!
Posted on Mar 09, 2009
I think it should be main driver belt slack, open the bottom and roll the roller by hand to relax the play head, It is batter to change the belt.
by the way who has this recorder's user manual can email to me
Posted on Mar 03, 2008
I fixed it. The Head Base plastic cracks because of the spring. I used superglue, cardboard paper soaked in super glue and a wood clamp. Like repairing fiberglass. Photos and notes here:
Posted on Sep 14, 2013
Tried all the belts, greasing, spring-checking, etc. Mine still popped out of play. (FF/REW) worked fine. There's a Control PCB Assembly in there that has a transistor (Q1) on it that activates and holds the running state. Mine was "open" when measured, so it was bad. Replaced that, and C1, C2, C3, C4, R3 and R4 (which are all connected directly), and it works fine. (Just replaced all the other stuff because they were cheap, Mouser had them, and why not put new parts in there? Less than $10, shipping included).
Mouser part #s:
Q1: 863-2SD1207S-AE $0.72
R3: 588-OD152JE 1/4watt 1.5K 5% Carbon Comp $0.42
R4: 588-OD333JE 1/4watt 33K 5% Carbon Comp $0.42
C1: 647-UVZ1C101MDD (Nichicon) Aluminum Electrolytic Capacitors 16V,100uF $0.18
C2,C3: 647-UHM1C471MPD (Nichicon) Aluminum Electrolytic Capacitors 16V,470uF 20% $0.44 (x2= $0.88)
Total $2.62 + ~ $5.00 S/H, "Economy" shipped.
The board is attached to the transport, and the entire transport must be removed to get to the underside of the board. It's the small board behind the transport. Not difficult to do, just need long, skinny Phillips screwdriver to get to some of the transport screws, and it will lift out. (Make sure no tape is in there).
What I figured happened was that some of the caps/resistors drifted out of tolerance and got weak over time. The "Play" function sends a strong surge through there to get the thing moving and I didn't help things running a lot of 90 min tapes thru it, which puts even more drag to get started. Signs that it's getting weak? Takes a while longer to start, when "Play" is pushed. I figure it finally just took out the transistor.
Now, I've gone through all my old tapes to transfer to digital multi-track, and just use it for couch-side "idea capture" with my old acoustic plugged into it, and a mic. Heck, I still have dozens of brand new tapes to use!
Posted on Nov 12, 2012
I had this problem; much of the trouble seemed to come down to lubricant on all of the plastic gears of the transport assembly that had hardened. I had to send it to a fellow in New Jersey who specializes in the Porta One and he basically had to take apart the transport, clean the plastic parts, and put it back together again.
If you're very very handy, you can find the service manual online. It will not show you how to do any of this, but it will include exploded diagrams of the machine and tell you the name of the parts so that when you lose some random dingus or frammus under the couch, you'll know what to look for online to replace it.
Posted on Dec 18, 2007
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