Issue with Philips home theater system

Jammed tray?

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

On Mon, 14 Jun 2010 01:48:05 +0100, Arfa Daily ??o??:

snipped-for-privacy@z10g2000yqb.googlegroups.com...

Maybe the OP was looking for some magic incantation to render or perhaps a sprinkle of holy water to cast out the demons?

Indeed, did he think it could be fixed magically and at no cost via usenet?

Mark Z.

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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?

On Tue, 15 Jun 2010 03:53:03 -0700, snipped-for-privacy@comcast.net ??o??:

snipped-for-privacy@z10g2000yqb.googlegroups.com...

So would you rather have someone tell you to shit-can it? If you don't know what "caps" are you have no business seeking repair advice.

Hi!

Well, you could try unplugging it for a few hours, but I cannot see this doing any good.

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.

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

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.

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.