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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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Help identify flameproof resistor
With the help of online blogs I've been trying to fix my Panasonic my pt-
47wx49e rear projection TV. I replaced two STK 392-110 as convergence amps and I found a blown resistor. The problem I have now is being able to order a replacement resistor. From what I've learned, it is a flameproof resistor. It's light blue, is marked 2.2 ohms, the only other markings are a J, and a 0, 8 and 9. I guess the only other info I need is the voltage so I'm asking here for help. I have the schematics that a kind soul at techlore sent to me but I dont understand it. Any help would be greatly appreciated. |
#2
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Help identify flameproof resistor
Dave Coburn wrote: With the help of online blogs I've been trying to fix my Panasonic my pt- 47wx49e rear projection TV. I replaced two STK 392-110 as convergence amps and I found a blown resistor. The problem I have now is being able to order a replacement resistor. From what I've learned, it is a flameproof resistor. It's light blue, is marked 2.2 ohms, the only other markings are a J, and a 0, 8 and 9. I guess the only other info I need is the voltage so I'm asking here for help. I have the schematics that a kind soul at techlore sent to me but I dont understand it. Any help would be greatly appreciated. You don't need a voltage rating for such a low value resistor. The voltage across it will be limited by dissipation. J is the tolerance. (5%). Graham |
#3
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Help identify flameproof resistor
OK, is there a way to determine the wattage from the markings?
Eeyore wrote in : Dave Coburn wrote: With the help of online blogs I've been trying to fix my Panasonic my pt- 47wx49e rear projection TV. I replaced two STK 392-110 as convergence amps and I found a blown resistor. The problem I have now is being able to order a replacement resistor. From what I've learned, it is a flameproof resistor. It's light blue, is marked 2.2 ohms, the only other markings are a J, and a 0, 8 and 9. I guess the only other info I need is the voltage so I'm asking here for help. I have the schematics that a kind soul at techlore sent to me but I dont understand it. Any help would be greatly appreciated. You don't need a voltage rating for such a low value resistor. The voltage across it will be limited by dissipation. J is the tolerance. (5%). Graham |
#4
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Help identify flameproof resistor
Dave Coburn wrote: OK, is there a way to determine the wattage from the markings? None whatever. You can sort of determine it from size though ! Graham |
#5
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Help identify flameproof resistor
I see. I can measure it when I get home from work, but is there a general
guideline? I've looked online for some sort of measuring guide but haven't had much luck. Thanks for your help. As you can probably tell, I'm in way over my head and if this doesn't get the TV working again, I'll end up replacing it. |
#6
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Help identify flameproof resistor
Dave Coburn wrote: I see. I can measure it when I get home from work, but is there a general guideline? Compare the size with what's available. Graham |
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