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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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Issue with Philips home theater system
Strange thing happening with my home theater system. The red on light
is flashing rapidly, almost to the point of being completely on solid, and when you press on the power button the indicator shows "TV" or "Disc" or whatever, but turns off after just a few seconds. Any clue what's going on here? Thanks in advance for any help you can provide. |
#2
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Issue with Philips home theater system
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#3
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Issue with Philips home theater system
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#4
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Issue with Philips home theater system
On Jun 13, 12:32*pm, Arfa Daily wrote:
On 13/06/2010 15:21, wrote: Strange thing happening with my home theater system. *The red on light is flashing rapidly, almost to the point of being completely on solid, and when you press on the power button the indicator shows "TV" or "Disc" or whatever, but turns off after just a few seconds. *Any clue what's going on here? *Thanks in advance for any help you can provide.. Either one of the secondary-side electrolytics is failing, or one of the secondary side rectifiers is leaky. Either way, get it sorted soon as, because if the regulation fails because of the main rail appearing *to be low, much other damage can be done to LSIs elsewhere in the machine. Arfa Thanks for your help. I hate to waste, but since they don't cost that much these days, I'm thinking I'll just replace it. Thanks again. Bob |
#5
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Issue with Philips home theater system
" wrote in message ... On Jun 13, 12:32 pm, Arfa Daily wrote: On 13/06/2010 15:21, wrote: Strange thing happening with my home theater system. The red on light is flashing rapidly, almost to the point of being completely on solid, and when you press on the power button the indicator shows "TV" or "Disc" or whatever, but turns off after just a few seconds. Any clue what's going on here? Thanks in advance for any help you can provide. Either one of the secondary-side electrolytics is failing, or one of the secondary side rectifiers is leaky. Either way, get it sorted soon as, because if the regulation fails because of the main rail appearing to be low, much other damage can be done to LSIs elsewhere in the machine. Arfa Thanks for your help. I hate to waste, but since they don't cost that much these days, I'm thinking I'll just replace it. Thanks again. Bob Well, for the sake of a few pennies worth of caps I would have thought it was worth a go at least. Otherwise, what was the point of asking the question on here ? Arfa |
#6
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Issue with Philips home theater system
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#7
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Issue with Philips home theater system
"Arfa Daily" wrote in message
news:__eRn.43160$Of1.3906@hurricane... " wrote in message ... On Jun 13, 12:32 pm, Arfa Daily wrote: On 13/06/2010 15:21, wrote: Strange thing happening with my home theater system. The red on light is flashing rapidly, almost to the point of being completely on solid, and when you press on the power button the indicator shows "TV" or "Disc" or whatever, but turns off after just a few seconds. Any clue what's going on here? Thanks in advance for any help you can provide. Either one of the secondary-side electrolytics is failing, or one of the secondary side rectifiers is leaky. Either way, get it sorted soon as, because if the regulation fails because of the main rail appearing to be low, much other damage can be done to LSIs elsewhere in the machine. Arfa Thanks for your help. I hate to waste, but since they don't cost that much these days, I'm thinking I'll just replace it. Thanks again. Bob Well, for the sake of a few pennies worth of caps I would have thought it was worth a go at least. Otherwise, what was the point of asking the question on here ? Arfa Indeed, did he think it could be fixed magically and at no cost via usenet? Mark Z. |
#8
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Issue with Philips home theater system
On Jun 14, 6:54*am, "Mark Zacharias"
wrote: "Arfa Daily" wrote in message news:__eRn.43160$Of1.3906@hurricane... " wrote in message .... On Jun 13, 12:32 pm, Arfa Daily wrote: On 13/06/2010 15:21, wrote: Strange thing happening with my home theater system. *The red on light is flashing rapidly, almost to the point of being completely on solid, and when you press on the power button the indicator shows "TV" or "Disc" or whatever, but turns off after just a few seconds. *Any clue what's going on here? *Thanks in advance for any help you can provide. Either one of the secondary-side electrolytics is failing, or one of the secondary side rectifiers is leaky. Either way, get it sorted soon as, because if the regulation fails because of the main rail appearing *to be low, much other damage can be done to LSIs elsewhere in the machine. Arfa Thanks for your help. *I hate to waste, but since they don't cost that much these days, I'm thinking I'll just replace it. Thanks again. Bob Well, for the sake of a few pennies worth of caps I would have thought it was worth a go at least. Otherwise, what was the point of asking the question on here ? Arfa Indeed, did he think it could be fixed magically and at no cost via usenet? Mark Z. No, I wasn't looking for a magic fix, but rather some ideas that I could maybe try. I'm not an expert, so I don't even know what it meant by trying the "caps". Why the cynicism? |
#10
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Issue with Philips home theater system
Hi!
No, I wasn't looking for a magic fix, but rather some ideas that I could maybe try. Well, you could try unplugging it for a few hours, but I cannot see this doing any good. *I'm not an expert, so I don't even know what it meant by trying the "caps". Caps are "capacitors". Although they're made of a variety of different materials, the ones that are typically troublesome are known as electrolytics. They contain a roll of thin metal foil and a moistened paper inside. They usually look like cylindrical cans of varying sizes. Some overworked, cheap or improperly made capacitors fail when the paste dries up. Sometimes such capacitors look defective (tops or bottoms bulged out, leaking paste, etc) and sometimes they do not. New electrolytic capacitors are cheap, and if you replace the bad ones soon, your equipment can be brought back to life. You'll need a soldering iron, something to desolder with and of course, some new solder. Why the cynicism? I think it's because you asked in a newsgroup dedicated to the repair of electronic devices and then expressed a total lack of interest in fixing your equipment. But that's just a guess... :-) William |
#11
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Issue with Philips home theater system
"William R. Walsh" wrote in message ... Hi! No, I wasn't looking for a magic fix, but rather some ideas that I could maybe try. Well, you could try unplugging it for a few hours, but I cannot see this doing any good. I'm not an expert, so I don't even know what it meant by trying the "caps". Caps are "capacitors". Although they're made of a variety of different materials, the ones that are typically troublesome are known as electrolytics. They contain a roll of thin metal foil and a moistened paper inside. They usually look like cylindrical cans of varying sizes. Some overworked, cheap or improperly made capacitors fail when the paste dries up. Sometimes such capacitors look defective (tops or bottoms bulged out, leaking paste, etc) and sometimes they do not. New electrolytic capacitors are cheap, and if you replace the bad ones soon, your equipment can be brought back to life. You'll need a soldering iron, something to desolder with and of course, some new solder. Why the cynicism? I think it's because you asked in a newsgroup dedicated to the repair of electronic devices and then expressed a total lack of interest in fixing your equipment. But that's just a guess... :-) William Quite so ... Arfa |
#12
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Issue with Philips home theater system
On Mon, 14 Jun 2010 01:09:29 +0000 (UTC), Meat Plow
wrote: Maybe the OP was looking for some magic incantation to render or perhaps a sprinkle of holy water to cast out the demons? Magic incantations don't work by themselves. However, when combined with burnt offerings, they are quite effective. I would recommend the immolation of an old PCB on the barbecue as an initial offering to the electronics gods. Ummm.... do this outdoors. Looking inside the box and reading the entrails is also effective. The problem is often easily visible. http://www.badcaps.net I'm somewhat undecided on the effectiveness of water, holy or otherwise, as a cleaning agent. While fairly useful at removing ionic contaminants, water is completely impotent against grease, oil, slime, goo, crud, vermin, filth, and Earl Gray tea. Detergents and solvents are far more effective. In some cases, the traditional sprinkle is sufficient, but for major demonic infestations, immersion followed by a compressed air drying, will be required. -- Jeff Liebermann 150 Felker St #D http://www.LearnByDestroying.com Santa Cruz CA 95060 http://802.11junk.com Skype: JeffLiebermann AE6KS 831-336-2558 |
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