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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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Mixer amp
With age,humidity or temperature or whatever, the screening card lining the inside of the plastic case can curl up and touch solder and traces on the IEC sub-board, aluminium side to mains voltages. Cut away all around that corner on the rear and side card. The EMX 88S has proper rigid metal work around that IEC area |
#2
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On Feb 21, 6:35*am, "N_Cook" wrote:
Mixer amp With age,humidity or temperature or whatever, the screening card lining the inside of the plastic case can curl up and touch solder and traces on the IEC sub-board, aluminium side to mains voltages. Cut away all around that corner on the rear and side card. The EMX 88S has proper rigid metal work around that IEC area For us folks on the west side of the Atlantic Ocean, what is a screening card? |
#4
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On 2/21/2010 8:41 AM N_Cook spake thus:
hr(bob) wrote in message ... On Feb 21, 6:35 am, "N_Cook" wrote: Mixer amp With age,humidity or temperature or whatever, the screening card lining the inside of the plastic case can curl up and touch solder and traces on the IEC sub-board, aluminium side to mains voltages. Cut away all around that corner on the rear and side card. The EMX 88S has proper rigid metal work around that IEC area For us folks on the west side of the Atlantic Ocean, what is a screening card? The lining put inside plastic cases to simulate metal cases as far as RFI out or in , in in this situation. (almost as good as the pub sign painter having to change the kerning between the "Fox" and and and and and "Hounds"). Something like a composite of card and aluminium foil so high probability of differential dimensional changes, ie curling Whats it called over there and I'll add to http://www.divdev.fsnet.co.uk/tool_terms.htm Typically what you Brits call "screening" we call "shielding". I think most folks here would refer to that as a shield of some sort (RF, electrostatic, etc.) -- You were wrong, and I'm man enough to admit it. - a Usenet "apology" |
#5
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David Nebenzahl wrote in message
.com... On 2/21/2010 8:41 AM N_Cook spake thus: hr(bob) wrote in message ... On Feb 21, 6:35 am, "N_Cook" wrote: Mixer amp With age,humidity or temperature or whatever, the screening card lining the inside of the plastic case can curl up and touch solder and traces on the IEC sub-board, aluminium side to mains voltages. Cut away all around that corner on the rear and side card. The EMX 88S has proper rigid metal work around that IEC area For us folks on the west side of the Atlantic Ocean, what is a screening card? The lining put inside plastic cases to simulate metal cases as far as RFI out or in , in in this situation. (almost as good as the pub sign painter having to change the kerning between the "Fox" and and and and and "Hounds"). Something like a composite of card and aluminium foil so high probability of differential dimensional changes, ie curling Whats it called over there and I'll add to http://www.divdev.fsnet.co.uk/tool_terms.htm Typically what you Brits call "screening" we call "shielding". I think most folks here would refer to that as a shield of some sort (RF, electrostatic, etc.) -- You were wrong, and I'm man enough to admit it. - a Usenet "apology" So what we call a valve screening can would be a tube shield in the US ? |
#6
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On 2/22/2010 12:35 AM N_Cook spake thus:
David Nebenzahl wrote in message .com... Typically what you Brits call "screening" we call "shielding". I think most folks here would refer to that as a shield of some sort (RF, electrostatic, etc.) So what we call a valve screening can would be a tube shield in the US ? Eggs-zactly. Just the way you call a "windscreen" what we call a "windshield". -- You were wrong, and I'm man enough to admit it. - a Usenet "apology" |
#7
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#8
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On 2/22/2010 6:17 AM PeterD spake thus:
On Sun, 21 Feb 2010 08:17:26 -0800 (PST), "hr(bob) " wrote: On Feb 21, 6:35 am, "N_Cook" wrote: Mixer amp With age,humidity or temperature or whatever, the screening card lining the inside of the plastic case can curl up and touch solder and traces on the IEC sub-board, aluminium side to mains voltages. Cut away all around that corner on the rear and side card. The EMX 88S has proper rigid metal work around that IEC area For us folks on the west side of the Atlantic Ocean, what is a screening card? Shield piece. Dunno about "piece"; never heard anything like that referred to as such. Just a "shield" usually suffices. -- You were wrong, and I'm man enough to admit it. - a Usenet "apology" |
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