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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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Harmon Kardon MS-150 ...
Anyone on here had the misfortune to have work on one of these POS ? If so,
how do you get into it ? It's got me beat. Front grille comes off, and a number of obvious screws then exposed. On the bottom, below the CD drive, is a plastic 'plate screwed between the front and rear case halves. Remove that, and the CD drive comes with it. That can all be unplugged and removed. That then exposes a PCB, again screwed between the front and rear halves. Four screws out of that, and the board is then adrift, but not going anywhere, as it is still apparently fixed to the case rear half by a screw into the phono connector block, that's behind a thick plastic stuck-in trim panel. With all that lot out, the front case-half appears to be largely adrift from the rear, except right around the middle, where it 'feels' as though there's another screw lurking, but nothing visible from any angle, front or rear. I've even taken the speakers out to make sure that there are no other screws behind them. So I'm stuck now. Anyone know the secret ... ? d:-\ Arfa |
#2
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Harmon Kardon MS-150 ...
On 22/01/2014 18:11, Arfa Daily wrote:
Anyone on here had the misfortune to have work on one of these POS ? If so, how do you get into it ? It's got me beat. Front grille comes off, and a number of obvious screws then exposed. On the bottom, below the CD drive, is a plastic 'plate screwed between the front and rear case halves. Remove that, and the CD drive comes with it. That can all be unplugged and removed. That then exposes a PCB, again screwed between the front and rear halves. Four screws out of that, and the board is then adrift, but not going anywhere, as it is still apparently fixed to the case rear half by a screw into the phono connector block, that's behind a thick plastic stuck-in trim panel. With all that lot out, the front case-half appears to be largely adrift from the rear, except right around the middle, where it 'feels' as though there's another screw lurking, but nothing visible from any angle, front or rear. I've even taken the speakers out to make sure that there are no other screws behind them. So I'm stuck now. Anyone know the secret ... ? d:-\ Arfa Angle grinder |
#3
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Harmon Kardon MS-150 ...
On 22/01/2014 20:06, N_Cook wrote:
On 22/01/2014 18:11, Arfa Daily wrote: Anyone on here had the misfortune to have work on one of these POS ? If so, how do you get into it ? It's got me beat. Front grille comes off, and a number of obvious screws then exposed. On the bottom, below the CD drive, is a plastic 'plate screwed between the front and rear case halves. Remove that, and the CD drive comes with it. That can all be unplugged and removed. That then exposes a PCB, again screwed between the front and rear halves. Four screws out of that, and the board is then adrift, but not going anywhere, as it is still apparently fixed to the case rear half by a screw into the phono connector block, that's behind a thick plastic stuck-in trim panel. With all that lot out, the front case-half appears to be largely adrift from the rear, except right around the middle, where it 'feels' as though there's another screw lurking, but nothing visible from any angle, front or rear. I've even taken the speakers out to make sure that there are no other screws behind them. So I'm stuck now. Anyone know the secret ... ? d:-\ Arfa Angle grinder Crow Bar -- Adrian C |
#4
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Harmon Kardon MS-150 ...
On 22/01/2014 18:11, Arfa Daily wrote:
Anyone on here had the misfortune to have work on one of these POS ? If so, how do you get into it ? It's got me beat. Front grille comes off, and a number of obvious screws then exposed. On the bottom, below the CD drive, is a plastic 'plate screwed between the front and rear case halves. Remove that, and the CD drive comes with it. That can all be unplugged and removed. That then exposes a PCB, again screwed between the front and rear halves. Four screws out of that, and the board is then adrift, but not going anywhere, as it is still apparently fixed to the case rear half by a screw into the phono connector block, that's behind a thick plastic stuck-in trim panel. With all that lot out, the front case-half appears to be largely adrift from the rear, except right around the middle, where it 'feels' as though there's another screw lurking, but nothing visible from any angle, front or rear. I've even taken the speakers out to make sure that there are no other screws behind them. So I'm stuck now. Anyone know the secret ... ? d:-\ Arfa Have you tried low temp hot air over the stuck on trim, to soften glue |
#5
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Harmon Kardon MS-150 ...
On Thu, 23 Jan 2014 10:25:11 +0000 Adrian C wrote in
Message id: : On 22/01/2014 20:06, N_Cook wrote: On 22/01/2014 18:11, Arfa Daily wrote: Anyone on here had the misfortune to have work on one of these POS ? If so, how do you get into it ? It's got me beat. Front grille comes off, and a number of obvious screws then exposed. On the bottom, below the CD drive, is a plastic 'plate screwed between the front and rear case halves. Remove that, and the CD drive comes with it. That can all be unplugged and removed. That then exposes a PCB, again screwed between the front and rear halves. Four screws out of that, and the board is then adrift, but not going anywhere, as it is still apparently fixed to the case rear half by a screw into the phono connector block, that's behind a thick plastic stuck-in trim panel. With all that lot out, the front case-half appears to be largely adrift from the rear, except right around the middle, where it 'feels' as though there's another screw lurking, but nothing visible from any angle, front or rear. I've even taken the speakers out to make sure that there are no other screws behind them. So I'm stuck now. Anyone know the secret ... ? d:-\ Arfa Angle grinder Crow Bar Semtex. |
#6
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Harmon Kardon MS-150 ...
Arfa Daily wrote: Anyone on here had the misfortune to have work on one of these POS ? If so, how do you get into it ? It's got me beat. Front grille comes off, and a number of obvious screws then exposed. On the bottom, below the CD drive, is a plastic 'plate screwed between the front and rear case halves. Remove that, and the CD drive comes with it. That can all be unplugged and removed. That then exposes a PCB, again screwed between the front and rear halves. Four screws out of that, and the board is then adrift, but not going anywhere, as it is still apparently fixed to the case rear half by a screw into the phono connector block, that's behind a thick plastic stuck-in trim panel. With all that lot out, the front case-half appears to be largely adrift from the rear, except right around the middle, where it 'feels' as though there's another screw lurking, but nothing visible from any angle, front or rear. I've even taken the speakers out to make sure that there are no other screws behind them. So I'm stuck now. Anyone know the secret ... ? d:-\ Arfa A blue wrench. -- Anyone wanting to run for any political office in the US should have to have a DD214, and a honorable discharge. |
#7
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Harmon Kardon MS-150 ...
"N_Cook" wrote in message ... On 22/01/2014 18:11, Arfa Daily wrote: Anyone on here had the misfortune to have work on one of these POS ? If so, how do you get into it ? It's got me beat. Front grille comes off, and a number of obvious screws then exposed. On the bottom, below the CD drive, is a plastic 'plate screwed between the front and rear case halves. Remove that, and the CD drive comes with it. That can all be unplugged and removed. That then exposes a PCB, again screwed between the front and rear halves. Four screws out of that, and the board is then adrift, but not going anywhere, as it is still apparently fixed to the case rear half by a screw into the phono connector block, that's behind a thick plastic stuck-in trim panel. With all that lot out, the front case-half appears to be largely adrift from the rear, except right around the middle, where it 'feels' as though there's another screw lurking, but nothing visible from any angle, front or rear. I've even taken the speakers out to make sure that there are no other screws behind them. So I'm stuck now. Anyone know the secret ... ? d:-\ Arfa Have you tried low temp hot air over the stuck on trim, to soften glue No, I haven't. There's a limit to the amount of time that I'm prepared to spend on this consumer junk, governed entirely by the law of diminishing returns. To be honest, if getting inside it involves removing glued-on trims, then I am not interested beyond the point that I have now reached. If someone knew the product enough to say "You have to stand it on one corner and clout the opposite corner with the heel of your hand" in much the way that you had to know the 'secret' way to bash monitor cabinets, then fair enough, but given that there is absolutely no service info out there for the product, and almost certainly no spares either, then I'm now drawing a line under it. Tomorrow, it will go back to the shop that took it in, unrepaired. I have already spoken to them about it, and their response was fair enough .... Arfa |
#8
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Harmon Kardon MS-150 ...
"Arfa Daily" wrote in message ...
No, I haven't. There's a limit to the amount of time that I'm prepared to spend on this consumer junk, governed entirely by the law of diminishing returns. To be honest, if getting inside it involves removing glued-on trims, then I am not interested beyond the point that I have now reached. To put it a bit more bluntly... Is it not reasonable to assume that a product that's glued together is not intended to be repaired? |
#9
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Harmon Kardon MS-150 ...
On 23/01/2014 17:54, Arfa Daily wrote:
"N_Cook" wrote in message ... On 22/01/2014 18:11, Arfa Daily wrote: Anyone on here had the misfortune to have work on one of these POS ? If so, how do you get into it ? It's got me beat. Front grille comes off, and a number of obvious screws then exposed. On the bottom, below the CD drive, is a plastic 'plate screwed between the front and rear case halves. Remove that, and the CD drive comes with it. That can all be unplugged and removed. That then exposes a PCB, again screwed between the front and rear halves. Four screws out of that, and the board is then adrift, but not going anywhere, as it is still apparently fixed to the case rear half by a screw into the phono connector block, that's behind a thick plastic stuck-in trim panel. With all that lot out, the front case-half appears to be largely adrift from the rear, except right around the middle, where it 'feels' as though there's another screw lurking, but nothing visible from any angle, front or rear. I've even taken the speakers out to make sure that there are no other screws behind them. So I'm stuck now. Anyone know the secret ... ? d:-\ Arfa Have you tried low temp hot air over the stuck on trim, to soften glue No, I haven't. There's a limit to the amount of time that I'm prepared to spend on this consumer junk, governed entirely by the law of diminishing returns. To be honest, if getting inside it involves removing glued-on trims, then I am not interested beyond the point that I have now reached. If someone knew the product enough to say "You have to stand it on one corner and clout the opposite corner with the heel of your hand" in much the way that you had to know the 'secret' way to bash monitor cabinets, then fair enough, but given that there is absolutely no service info out there for the product, and almost certainly no spares either, then I'm now drawing a line under it. Tomorrow, it will go back to the shop that took it in, unrepaired. I have already spoken to them about it, and their response was fair enough .... Arfa So nothing learnt then. My equivalent current situation is an expensive to replace (because of all the custom-made wiring ) for a 100V distributed PA system and blown ps, posted below. Flexa rack system, absolutely no useful techy info out there. Got some replacement Viper 12A SMPS ICs today, to replace the malfunctioning one in there. If some other downstream problem after that,then will at least have found and reported the info discovered so far. At least that amp has industry standard components , idents not rubbed off . No custom firmware uC so eminently repairable compared to a lot of anonymised stuff |
#10
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Harmon Kardon MS-150 ...
"William Sommerwerck" wrote in message ... "Arfa Daily" wrote in message ... No, I haven't. There's a limit to the amount of time that I'm prepared to spend on this consumer junk, governed entirely by the law of diminishing returns. To be honest, if getting inside it involves removing glued-on trims, then I am not interested beyond the point that I have now reached. To put it a bit more bluntly... Is it not reasonable to assume that a product that's glued together is not intended to be repaired? If something is genuinely glued together, then it gets little more than a cursory look if it crosses my bench. However, this one was slightly different from that in that it had lots of obvious screws holding the case halves together, and when these were removed, it was 'almost' coming apart in the way that you would expect, but something else, right in the middle, was still preventing it from coming all the way. I'm sure that a bit of brute force and ignorance would have seen it apart, but it's a fancy expensive-looking (and probably /actually/ expensive) item, and I was concerned that something visible might 'give', leaving nasty damage ... Arfa |
#11
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Harmon Kardon MS-150 ...
WHO the heck are they trying to be: http://static.bootic.com/_pictures/1...don-ms-150.jpg BOSE?! That thing looks like the Revel Resort in Atlantic City -LMAO!! At least they could have incorporated the iPod Dock into the cabinet, instead of tacking it onto the side like an afterthought. I say flip it over and start unscrewing from the bottom. |
#12
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Harmon Kardon MS-150 ...
On Wed, 29 Jan 2014 02:25:36 -0000, "Arfa Daily"
wrote: "William Sommerwerck" wrote in message ... "Arfa Daily" wrote in message ... No, I haven't. There's a limit to the amount of time that I'm prepared to spend on this consumer junk, governed entirely by the law of diminishing returns. To be honest, if getting inside it involves removing glued-on trims, then I am not interested beyond the point that I have now reached. To put it a bit more bluntly... Is it not reasonable to assume that a product that's glued together is not intended to be repaired? If something is genuinely glued together, then it gets little more than a cursory look if it crosses my bench. However, this one was slightly different from that in that it had lots of obvious screws holding the case halves together, and when these were removed, it was 'almost' coming apart in the way that you would expect, but something else, right in the middle, was still preventing it from coming all the way. I'm sure that a bit of brute force and ignorance would have seen it apart, but it's a fancy expensive-looking (and probably /actually/ expensive) item, and I was concerned that something visible might 'give', leaving nasty damage ... Arfa Sounds like a screw hidden under a label or sticker. ?-) |
#13
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Harmon Kardon MS-150 ...
"josephkk" wrote in message ... On Wed, 29 Jan 2014 02:25:36 -0000, "Arfa Daily" wrote: "William Sommerwerck" wrote in message ... "Arfa Daily" wrote in message ... No, I haven't. There's a limit to the amount of time that I'm prepared to spend on this consumer junk, governed entirely by the law of diminishing returns. To be honest, if getting inside it involves removing glued-on trims, then I am not interested beyond the point that I have now reached. To put it a bit more bluntly... Is it not reasonable to assume that a product that's glued together is not intended to be repaired? If something is genuinely glued together, then it gets little more than a cursory look if it crosses my bench. However, this one was slightly different from that in that it had lots of obvious screws holding the case halves together, and when these were removed, it was 'almost' coming apart in the way that you would expect, but something else, right in the middle, was still preventing it from coming all the way. I'm sure that a bit of brute force and ignorance would have seen it apart, but it's a fancy expensive-looking (and probably /actually/ expensive) item, and I was concerned that something visible might 'give', leaving nasty damage ... Arfa Sounds like a screw hidden under a label or sticker. ?-) Well, that was my thought too, but my eyes, a strong light, a strong magnifying glass, a bloody great screwdriver to lever the case apart as far as it would come, and 40+ years of experience persuading this sort of **** to come apart, failed to find any such .... :-( Arfa |
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