My Teac X1000R reel to reel player has a problem with its right hand capstan/drive system. The capstan breaks a photogate when it falls signalling the motor controller to increase its speed. Unfortunately something is FUBAR and instead of providing smooth control it "jumps" too far up and them drops all the way down signalling the player to stop. I can get it running if i carefully spin the right reel but that is so frustrating...
I wonder if anyone has any experience with these players and maybe knows if it's a blown transistor somewhere. The other reel works great, and it sounds great, so I would love to get this thing working properly.
Can I get it professionally repaired this day and age?
Thanks a lot.
Tade
I wonder if anyone has any experience with these players and maybe knows if it's a blown transistor somewhere. The other reel works great, and it sounds great, so I would love to get this thing working properly.
Can I get it professionally repaired this day and age?
Thanks a lot.
Tade
No experience with that particular unit, but I'd look for a dry low ESR cap on the motor control board. Follow motor wiring back to find which board.
Doc
Doc
oo, ok I can do that.
This would be an old electrolytic? I think it's some sort of simple PLL giving the motor a PWM drive; a bad cap would definitely throw that off.
I REALLY need a scope because there are test points all over :/
I'll dig it out of storage tomorrow. Thanks for the advice.
This would be an old electrolytic? I think it's some sort of simple PLL giving the motor a PWM drive; a bad cap would definitely throw that off.
I REALLY need a scope because there are test points all over :/
I'll dig it out of storage tomorrow. Thanks for the advice.
It's the erratic behavior that leads me to think it might be a cap. A second possibility, and probably a good one, would be high contact resistance on a relay. That also might cause the sort of behaviour you describe. Unlikely a general power supply problem because you describe audio and other drive components as functioning okay. Then after that I'd give a once over to the hub motor itself. A dry bearing might easily show same effect.
Best of luck to you.
Doc
This post may be old but I repair these decks all the time and have one on the bench now.
I have also come up with a mod kit to allow for more exact speed adjustments in each direction and speed.
I got aggravated by those deck that even with correct tensions were still out of specs with only one adjustment so I took action. Now my decks can go out with this mod to be inside a a couple of Hz setting instead of 30-40 Hz off.
The X1000R being a servo tension regulated reel motor deck has some weaknesses in it and you are attributing this to a bad cap which is a lot of guessing. It is too new to have bad caps yet. The typical problem is that the opto reference are out of adjustment usually by a snapped tape. Put the tension arms at mid point in the cutout of the face plate. Measure the lowest terminal of the three pin opto connection near the top right of the servo board. What you should see is 5Vdc there. If not then adjust the shutter or the bracket the opto sits on to give exactly 5Vdc at the output. You are allowed a variation of plus or minus .1Vdc. Then after this is done the next step is to wind a tape to center- equal tape on each side of 7" reel and then adjust the tape tension to 55g/cm with a Tentelometer gauge. If you don't have one then you can not do this adjustment. They have been selling on E bay for some years now due to shops that have closed down. I have gotten this $650 gauge for as little as $39. I have known of trainees of mine pay as much as $200 for a clean one. A shop OR individual can NOT do these machines correctly without this gauge- that is why I have 7 of them.
I have also come up with a mod kit to allow for more exact speed adjustments in each direction and speed.
I got aggravated by those deck that even with correct tensions were still out of specs with only one adjustment so I took action. Now my decks can go out with this mod to be inside a a couple of Hz setting instead of 30-40 Hz off.
The X1000R being a servo tension regulated reel motor deck has some weaknesses in it and you are attributing this to a bad cap which is a lot of guessing. It is too new to have bad caps yet. The typical problem is that the opto reference are out of adjustment usually by a snapped tape. Put the tension arms at mid point in the cutout of the face plate. Measure the lowest terminal of the three pin opto connection near the top right of the servo board. What you should see is 5Vdc there. If not then adjust the shutter or the bracket the opto sits on to give exactly 5Vdc at the output. You are allowed a variation of plus or minus .1Vdc. Then after this is done the next step is to wind a tape to center- equal tape on each side of 7" reel and then adjust the tape tension to 55g/cm with a Tentelometer gauge. If you don't have one then you can not do this adjustment. They have been selling on E bay for some years now due to shops that have closed down. I have gotten this $650 gauge for as little as $39. I have known of trainees of mine pay as much as $200 for a clean one. A shop OR individual can NOT do these machines correctly without this gauge- that is why I have 7 of them.
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Teac X1000R Speed Switch Available
In addition to the posts here I wanted to make it known that I have now secured a pile of switches needed to replace the Speed and Reel size switch on the X1000 version tape decks and there is no more reason to pay a high price (more than $20 each) on E bay.
I sell them for $10/ Pair with the appropriate postage added on. In USA it is mostly $8.30 Priority.
PM me or just look up Skywave Tape Deck Repair and you will find me. I am near Chicago.
In addition to the posts here I wanted to make it known that I have now secured a pile of switches needed to replace the Speed and Reel size switch on the X1000 version tape decks and there is no more reason to pay a high price (more than $20 each) on E bay.
I sell them for $10/ Pair with the appropriate postage added on. In USA it is mostly $8.30 Priority.
PM me or just look up Skywave Tape Deck Repair and you will find me. I am near Chicago.