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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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DLP projector lamp.
Are their any other symptoms of an aging DLP lamp other than reduced
brightness and possibly colour temperature? -- *Ah, I see the f**k-up fairy has visited us again Dave Plowman London SW To e-mail, change noise into sound. |
#2
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DLP projector lamp.
"Dave Plowman (News)" wrote in message ... Are their any other symptoms of an aging DLP lamp other than reduced brightness and possibly colour temperature? -- *Ah, I see the f**k-up fairy has visited us again Dave Plowman London SW To e-mail, change noise into sound. Protection shut down is one. I get DLP lamps from http://www.soundandvisionav.co.uk/ |
#3
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DLP projector lamp.
"Dave Plowman (News)" wrote:
Are their any other symptoms of an aging DLP lamp other than reduced brightness and possibly colour temperature? I've had a Mits 73" for four years now, the 1st bulb that went out seemed to produce a "gassy" picture for about a day and half before failing completely. The brightness was reduced (although not much) but there was sort of a fog on bright colored objects. The second bulb didn't do that but there was a hint something was going wrong for a couple weeks, it tended to have a light strobe effect in the background, very noticable when the set was first turned on. The 3rd bulb didn't show any symptoms, just didn't work anymore. If you have a Mits and are getting that halo effect (sort a ring around bright colored object) it's probably the light engine. I've had that replaced also. Hasn't been the most reliable set by a long shot. Next failure besides the lamp it's getting **** canned. -bruce |
#4
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DLP projector lamp.
In article ,
Bruce Esquibel wrote: "Dave Plowman (News)" wrote: Are their any other symptoms of an aging DLP lamp other than reduced brightness and possibly colour temperature? I've had a Mits 73" for four years now, the 1st bulb that went out seemed to produce a "gassy" picture for about a day and half before failing completely. The brightness was reduced (although not much) but there was sort of a fog on bright colored objects. The second bulb didn't do that but there was a hint something was going wrong for a couple weeks, it tended to have a light strobe effect in the background, very noticable when the set was first turned on. The 3rd bulb didn't show any symptoms, just didn't work anymore. If you have a Mits and are getting that halo effect (sort a ring around bright colored object) it's probably the light engine. I've had that replaced also. Hasn't been the most reliable set by a long shot. Next failure besides the lamp it's getting **** canned. -bruce Interesting. Mine is a Sagem 45" rear projector, and the symptoms are ghosting on movement and a weird lack of detail especially on black and white films. Faces especially. It's most noticeable on terrestrial digital. HD from satellite seems much better. Trying the same STB into an LCD set doesn't show these artifacts. The actual lamp is over 5 years old - so doesn't owe me anything. But being quite expensive don't want to change it if it's something else. -- *See no evil, Hear no evil, Date no evil. Dave Plowman London SW To e-mail, change noise into sound. |
#5
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DLP projector lamp.
On Tue, 11 May 2010 12:58:09 +0000, Bruce Esquibel wrote:
"Dave Plowman (News)" wrote: Are their any other symptoms of an aging DLP lamp other than reduced brightness and possibly colour temperature? I've had a Mits 73" for four years now, the 1st bulb that went out seemed to produce a "gassy" picture for about a day and half before failing completely. The brightness was reduced (although not much) but there was sort of a fog on bright colored objects. The second bulb didn't do that but there was a hint something was going wrong for a couple weeks, it tended to have a light strobe effect in the background, very noticable when the set was first turned on. The 3rd bulb didn't show any symptoms, just didn't work anymore. If you have a Mits and are getting that halo effect (sort a ring around bright colored object) it's probably the light engine. I've had that replaced also. Hasn't been the most reliable set by a long shot. Next failure besides the lamp it's getting **** canned. I don't blame you for ****-canning that money-pit. |
#6
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DLP projector lamp.
On Tue, 11 May 2010 12:58:09 +0000 (UTC), Bruce Esquibel
wrote: "Dave Plowman (News)" wrote: Are their any other symptoms of an aging DLP lamp other than reduced brightness and possibly colour temperature? I've had a Mits 73" for four years now, the 1st bulb that went out seemed to produce a "gassy" picture for about a day and half before failing completely. The brightness was reduced (although not much) but there was sort of a fog on bright colored objects. The second bulb didn't do that but there was a hint something was going wrong for a couple weeks, it tended to have a light strobe effect in the background, very noticable when the set was first turned on. The 3rd bulb didn't show any symptoms, just didn't work anymore. If you have a Mits and are getting that halo effect (sort a ring around bright colored object) it's probably the light engine. I've had that replaced also. Hasn't been the most reliable set by a long shot. Next failure besides the lamp it's getting **** canned. -bruce The 'halo effect' cause and cure has been well documented (including pictures) on AVSforum.com. Curing it is not for the inept, but anyone with basic mechanical skills, some alcohol, and q-tips can fix it. PlainBill |
#7
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DLP projector lamp.
Meat Plow wrote:
I don't blame you for ****-canning that money-pit. Honestly, I lucked out with the warranty. The place we bought it from (abt electronics) had a deal with the extended warranty I couldn't pass up, and I'm one to normally poo-poo those things. For $199 we got a 4 year, parts/labor with one free lamp replacement. No long waits with the service calls either, usually within 2-3 days. No joke, except for the cabinet and hard drive (it has a built in DVR), everything else has been replaced. Main chassis, light engine, some other optical assembly. All no charge and no problems. That ABT is great, Mits not so much, last tv I'd buy with their name on it. -bruce |
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