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Old 15th July 2008, 02:12 PM   #41
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Join Date: May 2005
Location: Munich
Thank you, jeffdak.

R591 ... R595 = 3321

Could you tell me the values of R501, R502, R503, R504, R505, R506, too?

Best regards,
Chris
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Old 16th July 2008, 06:42 AM   #42
jeffdak is offline jeffdak  Ecuador
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Join Date: May 2008
Thank you.

The resistor values are:

R500 = 1000
R501 = 1001
R502 = 2431
R503 = 2872
R504 = 4750
R505 = 1000
R506 = 7501
R507 = 2431

http://i34.tinypic.com/2q89feb.jpg

http://i33.tinypic.com/2e35r0k.jpg
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Old 2nd September 2008, 09:28 PM   #43
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Join Date: Sep 2008
Hello everyone. I am a newbie on the forum and need to contact mbates14 about the power supply issue on an LP350 that I was just given. The projector still works well, aside from the incessant light/dark flashing of the picture, which I assume is the power supply. I dont want to buy in to InFocus' ploy to get more money from me with an upgrade -- I just want a working projector . Any help would be greatly appreciated! Thanks!
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Old 2nd September 2008, 09:30 PM   #44
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Join Date: Jun 2002
Location: non
Make sure your lamp isnt bad first.
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Old 4th September 2008, 08:17 PM   #45
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That is quite possible, as it is a brand new lamp (and it carries a warranty, too). I am just worried that the power supply is going to blow because I'm using the SP-LAMP-3F instead of the SP-LAMP-3E with the original power supply.
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Old 5th September 2008, 01:28 AM   #46
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Join Date: Jun 2002
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Dont think its going to matter too much.

If you have to, the replacement lamps from ywh work perfectly fine with that model of power supply, so you can "re-lamp" your old/bad lamp and be fine.
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Old 5th September 2008, 01:32 AM   #47
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Join Date: Jun 2002
Location: non
Sorry, i have been away from the forums for awhile, so any of you that have posted questions for me, im just now getting around to reading them.


Those power supplies are a design flaw by themselves.

I was doing work for a guy in Georgia repairing a mass load of these power supplies and has gotten to the point where its getting monotonous looking at them daily, hehe. I don't have a problem fixing them, but its at the point now where im getting scrapped for time. So any of you that need their supply fixed, about 85% of the time, I can fix them, but it may take a little longer than usual.

However, i can usually repair a wide variety of power supplies. I just fixed a couple of screenplay models that were dead, no powerup.
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Old 5th September 2008, 01:36 AM   #48
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Join Date: Jun 2002
Location: non
here is my repair notes on the LP500 series. (Version one of the boards, not version 2).

They are backwards compatble to SOME EXTENT on the LP340s.
Attached Files
File Type: txt lp500-530.txt (1.2 KB, 206 views)
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Old 5th September 2008, 03:14 PM   #49
jeffdak is offline jeffdak  Ecuador
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Join Date: May 2008
Hello MBates

some time ago i posted this

quote:
Originally posted by mbates14
only real difference is the ignition voltage.

there are a series of 5 resistors, and another resistor directly under the ballast transformer that need adjusting/replacing. :-)

This is not spam its just i would like to know the answer


Hi, could you elaborate which resistors exactly and their new values? I appreciate so much that info ..

I have a LP340B projector a new model lamp and power supply no upgraded. (I think in good shape)

Thanks
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Old 6th September 2008, 02:00 AM   #50
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look at my repair notes. the values may correspond.
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