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wschellen
Joined: 04 Jun 2014
Posts: 4
Location: Encinitas CA
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| Posted: Wed Jun 04, 2014 4:12 am Post subject: Sony 1252Q will no longer power up? |
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I have not used my projector in 6 months or more, and when I went to turn it on last night there was nothing. No lights, fans, noise, nothing. I checked to make sure there was power at the plug. Any ideas what might have happened to it. Can I fix it? Thanks
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AnalogRocks
Forum Moderator
Joined: 08 Mar 2006
Posts: 26706
Location: Toronto, Ontario, Canada
TV/Projector: Sony 1252Q, AMPRO 4000G
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| Posted: Wed Jun 04, 2014 4:19 am Post subject: |
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Just to confirm, you powered on the mains switch by the plug then powered it up with the "ON" button on the top panel?
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wschellen
Joined: 04 Jun 2014
Posts: 4
Location: Encinitas CA
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| Posted: Wed Jun 04, 2014 4:31 am Post subject: |
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I have always left the main switch on. I usually power it up by just pushing the on button. When it didn't turn on I pushed the main switch button on and off a few times, but nothing.
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AnalogRocks
Forum Moderator
Joined: 08 Mar 2006
Posts: 26706
Location: Toronto, Ontario, Canada
TV/Projector: Sony 1252Q, AMPRO 4000G
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| Posted: Wed Jun 04, 2014 5:00 am Post subject: |
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There is a design flaw in the power supply on the 1252 and 1272 that randomly kills the power supply just as you described. I had it happen to my 1272 back in October.
email Curt ( the site owner ) and see if he has any in stock curtpalme@shaw.ca
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HD done right!
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draganm
Joined: 08 Mar 2006
Posts: 8990
Location: Colorado
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| Posted: Thu Jun 05, 2014 4:34 pm Post subject: |
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Well if you don't find a PS, there's a guy with a G70 on CL in Anaheim asking $900., he's dreaming but no reason you can't offer him a couple hundred bucks 
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ecrabb
Forum Moderator
Joined: 13 Mar 2006
Posts: 15909
Location: Utah
TV/Projector: JVC RS40, Epson 5010
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| Posted: Thu Jun 05, 2014 5:50 pm Post subject: |
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| draganm wrote: | | ...there's a guy with a G70 on CL in Anaheim asking $900., he's dreaming but no reason you can't offer him a couple hundred bucks |
No kidding. At $900, he can just plan on burying himself in the case and save some money on the casket.
If I were selling a G70 at this point, if I got $350 for a mint one, I'd be thrilled. If it has some wear, but has all the accessories and such, I'd be happy to get a couple hundred bucks. If the green is worn and/or it's missing accessories, then I'd be happy to have somebody drive across town to take it so I didn't have to move the damn thing myself.
SC
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wschellen
Joined: 04 Jun 2014
Posts: 4
Location: Encinitas CA
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| Posted: Fri Jun 06, 2014 3:40 am Post subject: |
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Curt thinks he may have a power supply, I will know next week. Is this something I can replace myself? Anyone have direction on doing a PS replacement.
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draganm
Joined: 08 Mar 2006
Posts: 8990
Location: Colorado
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ecrabb
Forum Moderator
Joined: 13 Mar 2006
Posts: 15909
Location: Utah
TV/Projector: JVC RS40, Epson 5010
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| Posted: Fri Jun 06, 2014 5:10 pm Post subject: |
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| draganm wrote: | | looks like it slides out the front |
It does. It's only two screws to demount it as I recall, but then there are several harnesses attached. I think you need to remove the lenses also… From memory, you loosen PSU, slide it out ~6 inches, remove the lenses, then you can get at the LVPS and HV regulator board.
I don't remember ever completely pulling the LVPS, so I can't remember whether a harness unplugs right at the LVPS, or whether the LVPS has a harness attached. Either way, I imagine the project shouldn't be too difficult for anybody with decent tools and basic mechanical skills. The only thing special I think you need is a long screwdriver to be able to remove the blue lens - next to the HV block. Probably wouldn't be a fun project for a first-timer if it's ceiling-mounted.
SC
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wschellen
Joined: 04 Jun 2014
Posts: 4
Location: Encinitas CA
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| Posted: Sun Jun 08, 2014 10:06 pm Post subject: |
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So the fun continues. I was able to pull the LV power supply without to much trouble. I did have to unhook several wire harnesses, but did not need to remove any lenses. I love how modular everything seems to be inside these projectors. Anyway I decided to open up the power supply case and low and behold I found what looks like a little fried resistor on the first board in the line. I took a great picture of it. Do you think this is the problem? Does it mean I have bigger problems somewhere else? Thanks all for the help. It is kind of fund trouble shooting.
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Curt Palme
CRT Tech
Joined: 08 Mar 2006
Posts: 24396
Location: Langley, BC
TV/Projector: All of them!
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| Posted: Sun Jun 08, 2014 11:50 pm Post subject: |
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you most likely have other issues. Resistors never overheat without there being another problem somewhere. Still, I'll bet it's isolated to a problem within the power supply.
back in town now, but backed up for a few days returning emails and such. I'm pretty sure I do have a replacement supply.
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