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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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Aiwa Z-L500 Stereo Tape Deck Eject Issue
Hi Arfa,
On Wed, 14 Dec 2011 03:00:57 -0000, in sci.electronics.repair you wrote: SNIP Ah. OK. Well I guess my considerable experience in seeing all models of Aiwa for the last 15 years or more, and never having seen a tape deck problem that I would consider to be down to poor design, must count for little then. For what it's worth, I would actually say that the Aiwa twin decks are amongst the more reliable and better designed 'budget' ones. Did you use manufacturer's original belts for your replacements ? When the deck grinds to a halt, is the motor still running ? If the belts are really tight enough as you suggest you believe, then if the cam gear is needing excess torque of the level you are saying, I would expect this to stall the motor. At the end of the day, the deck is easily removed, and easily cycled mechanically by hand into any of its modes, if you properly understand its sequencing, and know the right times in the cycle to flick the solenoid lever. If it truly is jamming up, then the reason should be obvious to a skilled eye. And if you wouldn't mind, please try to avoid top-posting in newsgroups. It is generally considered to be bad practice, and plays havoc with the thread's timeline ... I have been in the service field longer than you, and I have serviced many different brands of cassette decks over the years. I own other brands of cassette units (dual decks, etc.) and I don't have problems with them after years of use. Note: In the past, I have seen problems with Sony cassette units too. There is such a thing as "normal" problems after years of use, but my Aiwa does not have a "normal" problem after a year of use. I didn't use the cassette units "hard". Note: This model is several years old and I have been using another eternal cassette deck instead. My original post was to find out if anyone knew if an improved cassette deck was made for this model. John |
#2
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Aiwa Z-L500 Stereo Tape Deck Eject Issue
wrote in message
... Hi Arfa, On Wed, 14 Dec 2011 03:00:57 -0000, in sci.electronics.repair you wrote: SNIP Ah. OK. Well I guess my considerable experience in seeing all models of Aiwa for the last 15 years or more, and never having seen a tape deck problem that I would consider to be down to poor design, must count for little then. For what it's worth, I would actually say that the Aiwa twin decks are amongst the more reliable and better designed 'budget' ones. Did you use manufacturer's original belts for your replacements ? When the deck grinds to a halt, is the motor still running ? If the belts are really tight enough as you suggest you believe, then if the cam gear is needing excess torque of the level you are saying, I would expect this to stall the motor. At the end of the day, the deck is easily removed, and easily cycled mechanically by hand into any of its modes, if you properly understand its sequencing, and know the right times in the cycle to flick the solenoid lever. If it truly is jamming up, then the reason should be obvious to a skilled eye. And if you wouldn't mind, please try to avoid top-posting in newsgroups. It is generally considered to be bad practice, and plays havoc with the thread's timeline ... I have been in the service field longer than you, and I have serviced many different brands of cassette decks over the years. I own other brands of cassette units (dual decks, etc.) and I don't have problems with them after years of use. Note: In the past, I have seen problems with Sony cassette units too. There is such a thing as "normal" problems after years of use, but my Aiwa does not have a "normal" problem after a year of use. I didn't use the cassette units "hard". Note: This model is several years old and I have been using another eternal cassette deck instead. My original post was to find out if anyone knew if an improved cassette deck was made for this model. John There would not be any improved deck to replace yours. Geoff is probably correct. If you did not use original Aiwa belts, that is probably your problem. The Aiwa's are simply more critical for this than you might think. Mark Z. |
#3
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Aiwa Z-L500 Stereo Tape Deck Eject Issue
wrote in message ... Hi Arfa, On Wed, 14 Dec 2011 03:00:57 -0000, in sci.electronics.repair you wrote: SNIP Ah. OK. Well I guess my considerable experience in seeing all models of Aiwa for the last 15 years or more, and never having seen a tape deck problem that I would consider to be down to poor design, must count for little then. For what it's worth, I would actually say that the Aiwa twin decks are amongst the more reliable and better designed 'budget' ones. Did you use manufacturer's original belts for your replacements ? When the deck grinds to a halt, is the motor still running ? If the belts are really tight enough as you suggest you believe, then if the cam gear is needing excess torque of the level you are saying, I would expect this to stall the motor. At the end of the day, the deck is easily removed, and easily cycled mechanically by hand into any of its modes, if you properly understand its sequencing, and know the right times in the cycle to flick the solenoid lever. If it truly is jamming up, then the reason should be obvious to a skilled eye. And if you wouldn't mind, please try to avoid top-posting in newsgroups. It is generally considered to be bad practice, and plays havoc with the thread's timeline ... I have been in the service field longer than you, and I have serviced many different brands of cassette decks over the years. I own other brands of cassette units (dual decks, etc.) and I don't have problems with them after years of use. Note: In the past, I have seen problems with Sony cassette units too. There is such a thing as "normal" problems after years of use, but my Aiwa does not have a "normal" problem after a year of use. I didn't use the cassette units "hard". Note: This model is several years old and I have been using another eternal cassette deck instead. My original post was to find out if anyone knew if an improved cassette deck was made for this model. John And how, pray, do you think you know how long I've been in the business, and what my experience level is ? I have probably seen and repaired more models of Aiwa than you even knew existed. The several different decks fitted to Aiwa units - which for some time now have been Sony anyway - are not generally unreliable, and have not undergone any improvements in their design that I am aware of, because they have not needed it. The one problem that all varieties that they fit suffer from, is belts, and the symptoms, as anyone familiar with them will tell you, are exactly as you described in your original post. That is the only 'normal' problem that I have ever seen them suffer from. You suggested that both decks did the same thing, but otherwise ran ok. As the two decks are effectively completely separate entities except for sharing a common motor, don't you think that it would be extremely unlikely that both had suffered from the same problem at the same time, if it was some kind of mechanical problem within the deck ? About the only other thing that I can see that it could be, is either a bad motor or low supply to the motor, either of which might result in poor torque when it was needed to turn over the cam gear, and would be easily diagnosed by someone with your apparent experience and understanding of these decks. Did you ever check, to answer my previous question about whether the motor is stalled or running when the cam gear has stopped ? If you don't follow the correct diagnostic procedures, you will never get to the bottom of the problem. But then I expect you know that, being a service technician for many years ... Arfa |
#4
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Aiwa Z-L500 Stereo Tape Deck Eject Issue
"Arfa Daily" wrote in message ... wrote in message ... Hi Arfa, On Wed, 14 Dec 2011 03:00:57 -0000, in sci.electronics.repair you wrote: SNIP Ah. OK. Well I guess my considerable experience in seeing all models of Aiwa for the last 15 years or more, and never having seen a tape deck problem that I would consider to be down to poor design, must count for little then. For what it's worth, I would actually say that the Aiwa twin decks are amongst the more reliable and better designed 'budget' ones. Did you use manufacturer's original belts for your replacements ? When the deck grinds to a halt, is the motor still running ? If the belts are really tight enough as you suggest you believe, then if the cam gear is needing excess torque of the level you are saying, I would expect this to stall the motor. At the end of the day, the deck is easily removed, and easily cycled mechanically by hand into any of its modes, if you properly understand its sequencing, and know the right times in the cycle to flick the solenoid lever. If it truly is jamming up, then the reason should be obvious to a skilled eye. And if you wouldn't mind, please try to avoid top-posting in newsgroups. It is generally considered to be bad practice, and plays havoc with the thread's timeline ... I have been in the service field longer than you, and I have serviced many different brands of cassette decks over the years. I own other brands of cassette units (dual decks, etc.) and I don't have problems with them after years of use. Note: In the past, I have seen problems with Sony cassette units too. There is such a thing as "normal" problems after years of use, but my Aiwa does not have a "normal" problem after a year of use. I didn't use the cassette units "hard". Note: This model is several years old and I have been using another eternal cassette deck instead. My original post was to find out if anyone knew if an improved cassette deck was made for this model. John And how, pray, do you think you know how long I've been in the business, and what my experience level is ? I have probably seen and repaired more models of Aiwa than you even knew existed. The several different decks fitted to Aiwa units - which for some time now have been Sony anyway - are not generally unreliable, and have not undergone any improvements in their design that I am aware of, because they have not needed it. The one problem that all varieties that they fit suffer from, is belts, and the symptoms, as anyone familiar with them will tell you, are exactly as you described in your original post. That is the only 'normal' problem that I have ever seen them suffer from. You suggested that both decks did the same thing, but otherwise ran ok. As the two decks are effectively completely separate entities except for sharing a common motor, don't you think that it would be extremely unlikely that both had suffered from the same problem at the same time, if it was some kind of mechanical problem within the deck ? About the only other thing that I can see that it could be, is either a bad motor or low supply to the motor, either of which might result in poor torque when it was needed to turn over the cam gear, and would be easily diagnosed by someone with your apparent experience and understanding of these decks. Did you ever check, to answer my previous question about whether the motor is stalled or running when the cam gear has stopped ? If you don't follow the correct diagnostic procedures, you will never get to the bottom of the problem. But then I expect you know that, being a service technician for many years ... Arfa I agree with you. My experience with AIWA multi-disc carousel players has shown that the belts used in the drawer drive/disc load mech are very critical in their specs. Using AIWA belts is the best bet, and making sure all the sticky grease has been cleaned out and replaced with new. Is AIWA currently producing audio equipment? Haven't seen many ads for them lately. Tom |
#5
Posted to sci.electronics.repair
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Aiwa Z-L500 Stereo Tape Deck Eject Issue
"hifi-tek" wrote in message m... "Arfa Daily" wrote in message ... wrote in message ... Hi Arfa, On Wed, 14 Dec 2011 03:00:57 -0000, in sci.electronics.repair you wrote: SNIP Ah. OK. Well I guess my considerable experience in seeing all models of Aiwa for the last 15 years or more, and never having seen a tape deck problem that I would consider to be down to poor design, must count for little then. For what it's worth, I would actually say that the Aiwa twin decks are amongst the more reliable and better designed 'budget' ones. Did you use manufacturer's original belts for your replacements ? When the deck grinds to a halt, is the motor still running ? If the belts are really tight enough as you suggest you believe, then if the cam gear is needing excess torque of the level you are saying, I would expect this to stall the motor. At the end of the day, the deck is easily removed, and easily cycled mechanically by hand into any of its modes, if you properly understand its sequencing, and know the right times in the cycle to flick the solenoid lever. If it truly is jamming up, then the reason should be obvious to a skilled eye. And if you wouldn't mind, please try to avoid top-posting in newsgroups. It is generally considered to be bad practice, and plays havoc with the thread's timeline ... I have been in the service field longer than you, and I have serviced many different brands of cassette decks over the years. I own other brands of cassette units (dual decks, etc.) and I don't have problems with them after years of use. Note: In the past, I have seen problems with Sony cassette units too. There is such a thing as "normal" problems after years of use, but my Aiwa does not have a "normal" problem after a year of use. I didn't use the cassette units "hard". Note: This model is several years old and I have been using another eternal cassette deck instead. My original post was to find out if anyone knew if an improved cassette deck was made for this model. John And how, pray, do you think you know how long I've been in the business, and what my experience level is ? I have probably seen and repaired more models of Aiwa than you even knew existed. The several different decks fitted to Aiwa units - which for some time now have been Sony anyway - are not generally unreliable, and have not undergone any improvements in their design that I am aware of, because they have not needed it. The one problem that all varieties that they fit suffer from, is belts, and the symptoms, as anyone familiar with them will tell you, are exactly as you described in your original post. That is the only 'normal' problem that I have ever seen them suffer from. You suggested that both decks did the same thing, but otherwise ran ok. As the two decks are effectively completely separate entities except for sharing a common motor, don't you think that it would be extremely unlikely that both had suffered from the same problem at the same time, if it was some kind of mechanical problem within the deck ? About the only other thing that I can see that it could be, is either a bad motor or low supply to the motor, either of which might result in poor torque when it was needed to turn over the cam gear, and would be easily diagnosed by someone with your apparent experience and understanding of these decks. Did you ever check, to answer my previous question about whether the motor is stalled or running when the cam gear has stopped ? If you don't follow the correct diagnostic procedures, you will never get to the bottom of the problem. But then I expect you know that, being a service technician for many years ... Arfa I agree with you. My experience with AIWA multi-disc carousel players has shown that the belts used in the drawer drive/disc load mech are very critical in their specs. Using AIWA belts is the best bet, and making sure all the sticky grease has been cleaned out and replaced with new. Is AIWA currently producing audio equipment? Haven't seen many ads for them lately. Tom Yes, stuff is still produced under the Aiwa brand name, but that name has been owned by Sony for some time now. However, that may be changing. If you try to look up anything to do with the Aiwa brand name, you just get led back to a Sony site that tells you that the Aiwa site has closed down ... The OP's original question of course referred to the tape decks fitted to these Aiwa all-in-ones, and I made the point that the belt sizes that are used for replacement on them, are somewhat more critical than on other makes of deck. However, I'm also with you on the belts fitted to the carousel CD mechs - both the 3-changers, and the 5 changers - in that these are also extremely critical. The one that drives the worm gear for carousel rotation is particularly so, and I never found a suitable third party replacement that would work correctly on them, so always stocked a genuine Aiwa replacement. Arfa |
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