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Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems. |
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#1
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Adjusting Cassette Player Speed
My old Optonica RT-6207 is running a little slow (recent yard sale
purchase). Without any special equipment, I would like to give a try adjusting it. I gather there is a screw or pot somewhere that might adjust motor voltage and subsequently speed. If this is in fact correct, where should I look for it? It is a 2 motor drive, does that affect what I may need to do? Don't have a 1K tape and am not interested in purchasing test equipment. Thanks. |
#2
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Adjusting Cassette Player Speed
lukiedog:
BEFORE you adjust anything.... are you certain that the belts are not worn or slipping and that the lubrication of the mechanism is OK??? There will either be a pot on the main board or a small adjustment hole in the back of the motor. Without a test tape or any test equipment ..... exactly how do you propose getting the speed absolutely correct? -- Best Regards, Daniel Sofie Electronics Supply & Repair - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - "lukiedog" wrote in message affect what I may need to do? Don't have a 1K tape and am not interested in purchasing test equipment. Thanks. |
#4
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Adjusting Cassette Player Speed
I was planning on recording a number of plucks on a tuned guitar from
an accurate recorder and playing back on the slow unit and adjusting it while monitoring my electronic guitar tuner. Or trail and error, if that failed. I opened the unit up and there are two motors made by sharp behind the cassette housing. They do have a hole in the rear of the round metal body which has a plastic film on them. The belts don't look too bad and look like they would be a bear to get to to replace anyway. And as far as lubrication, I wouldn't know where to start. If someone could make it sound easy, I would give it a shot. Otherwise, back to the pile. Too bad, it is a nice unit with a baked on black metal finish on the housing and the buttons have a very solid feel to them.... "Sofie" wrote in message ... lukiedog: BEFORE you adjust anything.... are you certain that the belts are not worn or slipping and that the lubrication of the mechanism is OK??? There will either be a pot on the main board or a small adjustment hole in the back of the motor. Without a test tape or any test equipment ..... exactly how do you propose getting the speed absolutely correct? -- Best Regards, Daniel Sofie Electronics Supply & Repair - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - "lukiedog" wrote in message affect what I may need to do? Don't have a 1K tape and am not interested in purchasing test equipment. Thanks. |
#5
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Adjusting Cassette Player Speed
If you're not willing to replace the rubber, then I'd say it's 'back to the
pile' for it. FWIW, the rubber is always the first thing to deteriorate on these otherwise functioning units. It's not worth going to any trouble at all with them, unless you're also going to get new rubber bands. It's just throwing good money (or effort) after bad. jak "lukiedog" wrote in message om... I was planning on recording a number of plucks on a tuned guitar from an accurate recorder and playing back on the slow unit and adjusting it while monitoring my electronic guitar tuner. Or trail and error, if that failed. I opened the unit up and there are two motors made by sharp behind the cassette housing. They do have a hole in the rear of the round metal body which has a plastic film on them. The belts don't look too bad and look like they would be a bear to get to to replace anyway. And as far as lubrication, I wouldn't know where to start. If someone could make it sound easy, I would give it a shot. Otherwise, back to the pile. Too bad, it is a nice unit with a baked on black metal finish on the housing and the buttons have a very solid feel to them.... "Sofie" wrote in message ... lukiedog: BEFORE you adjust anything.... are you certain that the belts are not worn or slipping and that the lubrication of the mechanism is OK??? There will either be a pot on the main board or a small adjustment hole in the back of the motor. Without a test tape or any test equipment ..... exactly how do you propose getting the speed absolutely correct? -- Best Regards, Daniel Sofie Electronics Supply & Repair - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - "lukiedog" wrote in message affect what I may need to do? Don't have a 1K tape and am not interested in purchasing test equipment. Thanks. |
#6
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Adjusting Cassette Player Speed
There doesn't appear to be anything wrong with the rubber. Feels like
it has tension. I have seen dried out bands before and these actually look pretty good compared. "jakdedert" wrote in message .. . If you're not willing to replace the rubber, then I'd say it's 'back to the pile' for it. FWIW, the rubber is always the first thing to deteriorate on these otherwise functioning units. It's not worth going to any trouble at all with them, unless you're also going to get new rubber bands. It's just throwing good money (or effort) after bad. jak "lukiedog" wrote in message om... I was planning on recording a number of plucks on a tuned guitar from an accurate recorder and playing back on the slow unit and adjusting it while monitoring my electronic guitar tuner. Or trail and error, if that failed. I opened the unit up and there are two motors made by sharp behind the cassette housing. They do have a hole in the rear of the round metal body which has a plastic film on them. The belts don't look too bad and look like they would be a bear to get to to replace anyway. And as far as lubrication, I wouldn't know where to start. If someone could make it sound easy, I would give it a shot. Otherwise, back to the pile. Too bad, it is a nice unit with a baked on black metal finish on the housing and the buttons have a very solid feel to them.... "Sofie" wrote in message ... lukiedog: BEFORE you adjust anything.... are you certain that the belts are not worn or slipping and that the lubrication of the mechanism is OK??? There will either be a pot on the main board or a small adjustment hole in the back of the motor. Without a test tape or any test equipment ..... exactly how do you propose getting the speed absolutely correct? -- Best Regards, Daniel Sofie Electronics Supply & Repair - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - "lukiedog" wrote in message affect what I may need to do? Don't have a 1K tape and am not interested in purchasing test equipment. Thanks. |
#7
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Adjusting Cassette Player Speed
lukiedog:
You asked the question in your original posting, you have read the replies and repair suggestions from knowledgeable techs....... you can now decide what you want to do next, the ball is in your court. -- Best Regards, Daniel Sofie Electronics Supply & Repair --------------------------- "lukiedog" wrote in message m... There doesn't appear to be anything wrong with the rubber. Feels like it has tension. I have seen dried out bands before and these actually look pretty good compared. .. |
#8
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Adjusting Cassette Player Speed
"lukiedog" bravely wrote to "All" (16 Nov 03 09:10:15)
--- on the heady topic of " Adjusting Cassette Player Speed" lu From: (lukiedog) lu There doesn't appear to be anything wrong with the rubber. Feels like lu it has tension. I have seen dried out bands before and these actually lu look pretty good compared. I've noticed rubber bands tend to soften and stretch rather then dry and tighten up. An old soft and stretched band will result in slipping. .... This message transmitted on 100% recycled photons. |
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