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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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VCR chews tapes because suspension arc for the jockey-wheel/idler/ slip
clutch assembly is an arc of plastic moulded over the steel of the chassis. Then has cracked and catches the carrier as it swings across . A web of plastic filaments joining odd bits of plastic pillars etc, located by flowing through holes in the metal at formation, but one of the interconnects forming this arc. If anyone remembers all those Philips car radios that used plastic rim to the metal capstans, that failed, because of excess heat inside the dashboard of a car in summer and differential expansion of incompatible materials. Or I thought so ,this in a domestic TV/VCR combo with ps and heat over the VCR , not under. This is a Daewoo GB14F8T2 using coincidentally? lots of Philips chippery. So could it be just an age effect, 1999 vcr, this hard plastic contracting with age |
#2
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On Mar 22, 5:38*am, "N_Cook" wrote:
VCR chews tapes because suspension arc for the jockey-wheel/idler/ slip clutch assembly is an arc of plastic moulded over the steel of the chassis. Then has cracked and catches the carrier as it swings across . *A web of plastic filaments joining odd bits of plastic pillars etc, located by flowing through holes in the metal at formation, but one of the interconnects forming this arc. If anyone remembers all those Philips car radios that used plastic rim to the metal capstans, that failed, because of excess heat inside the dashboard of a car in summer and differential expansion of incompatible materials. Or I thought so ,this in a domestic TV/VCR combo with ps and heat over the VCR , not under. This is a Daewoo GB14F8T2 using coincidentally? lots of Philips chippery. So could it be just an age effect, 1999 vcr, this hard plastic contracting with age After 11 years, let it go to the great scrapheap in the sky, or English Channel or wherever your old electronicss go. A replacement ought to be cheap if you can find one still for sale. |
#3
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"N_Cook" wrote in
: VCR chews tapes because suspension arc for the jockey-wheel/idler/ slip clutch assembly is an arc of plastic moulded over the steel of the chassis. Then has cracked and catches the carrier as it swings across . A web of plastic filaments joining odd bits of plastic pillars etc, located by flowing through holes in the metal at formation, but one of the interconnects forming this arc. If anyone remembers all those Philips car radios that used plastic rim to the metal capstans, that failed, because of excess heat inside the dashboard of a car in summer and differential expansion of incompatible materials. Or I thought so ,this in a domestic TV/VCR combo with ps and heat over the VCR , not under. This is a Daewoo GB14F8T2 using coincidentally? lots of Philips chippery. So could it be just an age effect, 1999 vcr, this hard plastic contracting with age One possible fix uses 'shapelock' plastic http://shapelock.com/ It is neat stuff. Looks and acts like nylon (can be machined and painted) EXCEPT if you heat it to 60 deg C, it turns clear, can be shaped like clay, by hand!, sticks to other plastics!, and takes a fine impression. I have used it to fix my wifes sewing machine, to fix a broken nylon printer gear, to fix the paper tray in a printer, and to secure connectors in a multi media lab where users have been insisting on disconnecting the video connectors and rewiring things the way they think it needs to be. I globbed the plastic around the gnurled knobs on the vga connectors on the switch box, so that they CAN't disconnect things (without a hot air gun or a knife and a LOT of hard work). You should be able to 'fix' the broken brackets with this stuff. I have experimented, leaving some in my car in the summer, and it did NOT get hot enough in the car to soften the plastic. Of course, if your VCR gets above 60 C inside, it will NOT hold. -- bz 73 de N5BZ k please pardon my infinite ignorance, the set-of-things-I-do-not-know is an infinite set. |
#4
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On 25/03/2010 13:32, bz wrote:
wrote in : VCR chews tapes because suspension arc for the jockey-wheel/idler/ slip clutch assembly is an arc of plastic moulded over the steel of the chassis. Then has cracked and catches the carrier as it swings across . A web of plastic filaments joining odd bits of plastic pillars etc, located by flowing through holes in the metal at formation, but one of the interconnects forming this arc. If anyone remembers all those Philips car radios that used plastic rim to the metal capstans, that failed, because of excess heat inside the dashboard of a car in summer and differential expansion of incompatible materials. Or I thought so ,this in a domestic TV/VCR combo with ps and heat over the VCR , not under. This is a Daewoo GB14F8T2 using coincidentally? lots of Philips chippery. So could it be just an age effect, 1999 vcr, this hard plastic contracting with age One possible fix uses 'shapelock' plastic http://shapelock.com/ It is neat stuff. Looks and acts like nylon (can be machined and painted) EXCEPT if you heat it to 60 deg C, it turns clear, can be shaped like clay, by hand!, sticks to other plastics!, and takes a fine impression. I have used it to fix my wifes sewing machine, to fix a broken nylon printer gear, to fix the paper tray in a printer, and to secure connectors in a multi media lab where users have been insisting on disconnecting the video connectors and rewiring things the way they think it needs to be. I globbed the plastic around the gnurled knobs on the vga connectors on the switch box, so that they CAN't disconnect things (without a hot air gun or a knife and a LOT of hard work). You should be able to 'fix' the broken brackets with this stuff. I have experimented, leaving some in my car in the summer, and it did NOT get hot enough in the car to soften the plastic. Of course, if your VCR gets above 60 C inside, it will NOT hold. Known as Polymorph in the UK, available from Rapid electronics. |
#5
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bz wrote in message
98.139... "N_Cook" wrote in : VCR chews tapes because suspension arc for the jockey-wheel/idler/ slip clutch assembly is an arc of plastic moulded over the steel of the chassis. Then has cracked and catches the carrier as it swings across . A web of plastic filaments joining odd bits of plastic pillars etc, located by flowing through holes in the metal at formation, but one of the interconnects forming this arc. If anyone remembers all those Philips car radios that used plastic rim to the metal capstans, that failed, because of excess heat inside the dashboard of a car in summer and differential expansion of incompatible materials. Or I thought so ,this in a domestic TV/VCR combo with ps and heat over the VCR , not under. This is a Daewoo GB14F8T2 using coincidentally? lots of Philips chippery. So could it be just an age effect, 1999 vcr, this hard plastic contracting with age One possible fix uses 'shapelock' plastic http://shapelock.com/ It is neat stuff. Looks and acts like nylon (can be machined and painted) EXCEPT if you heat it to 60 deg C, it turns clear, can be shaped like clay, by hand!, sticks to other plastics!, and takes a fine impression. I have used it to fix my wifes sewing machine, to fix a broken nylon printer gear, to fix the paper tray in a printer, and to secure connectors in a multi media lab where users have been insisting on disconnecting the video connectors and rewiring things the way they think it needs to be. I globbed the plastic around the gnurled knobs on the vga connectors on the switch box, so that they CAN't disconnect things (without a hot air gun or a knife and a LOT of hard work). You should be able to 'fix' the broken brackets with this stuff. I have experimented, leaving some in my car in the summer, and it did NOT get hot enough in the car to soften the plastic. Of course, if your VCR gets above 60 C inside, it will NOT hold. -- bz 73 de N5BZ k please pardon my infinite ignorance, the set-of-things-I-do-not-know is an infinite set. Sorry , no problem finding a cure, done and dusted last week. For writing this up I was after a manufacturing / material generic term for this use of plastic tracery as a structural process. Some PTFE strip fixed in there instead. While with VCRs , is there anywhere in the UK with a stock of VCR pinchwheels? or is the same route for audio cassette pinch wheels now? make your own from piercing rubber cord as the suppliers call it or some other bodge |
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