Chuck Williams Fan Mod, WOW!! - AVS Forum
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post #1 of 231 Old 11-21-2001, 05:55 AM - Thread Starter
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I thought I should let all of you know. I had Chuck Williams over yesterday. He modified the fans in my NEC 10PG. From what I understand he has a similar modification for the Sony's as well. The fans that use to be loud are so quiet that its amazing. I would say about a 90% difference in the sound being lowered. And yes the projector does NOT get hot at all. Forget hush boxes and all of the construction needed to help quiet your projector. Run don't walk to the phone and ask Chuck for his fan modification. Its the perfect solution. Thanks Chuck for a great job, I now can enjoy my projector during those quite moments in a movie.

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post #2 of 231 Old 11-21-2001, 12:42 PM
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FYI, there is also a fan mod for the Electrohome Marquee line of projectors that quiets the noise considerably for all you Marquee owners out there!!!

Tim Martin knows how to do it, as well as myself and a few others if interested.

Dave Harper
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post #3 of 231 Old 11-21-2001, 01:27 PM
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Sounds cool, any tips for a LCD newbie?, my first projector is a Sony VPL-CX1 if thats any help :)

thanks!

James
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post #4 of 231 Old 11-21-2001, 02:33 PM
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Is there a mod for the Sony 1272? How much (roughly) would a mod cost to install?

Thanks,
Bryan
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post #5 of 231 Old 11-21-2001, 02:40 PM
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Quote:
Sounds cool, any tips for a LCD newbie?
Here is a tool that will quiet any lamp projector for only $44.99

I have heard reports on poor reliability after the mod though...:D

Mark.
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post #6 of 231 Old 11-21-2001, 02:51 PM
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Tah Mark great help, having a bad day are we :rolleyes:
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post #7 of 231 Old 11-21-2001, 02:55 PM
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Tah Mark great help, having a bad day are we?
Sorry, just having a little fun. Lamp projectors are difficult to quiet while still maintaining cooling.

Mark.
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post #8 of 231 Old 11-21-2001, 03:04 PM
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...thanks mark...

That was the best laugh I had all week.

Shane
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post #9 of 231 Old 11-21-2001, 03:15 PM
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Hah, Hah, Hah, Hah.......Hah, Hah!!!

Good one! (Wiping away the tears)
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post #10 of 231 Old 11-21-2001, 03:59 PM
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Hurry hurry, only one left in stock!
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post #11 of 231 Old 11-21-2001, 05:12 PM
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You guys should be CRT salesmen, your commision would be ...

np mark :p
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post #12 of 231 Old 11-21-2001, 06:01 PM
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John,

Thanks for your post! It was pretty quiet after I was done, wasn't it?

I'll be posting more info on this mod in a couple of days. It will work on Sony VPH12XX and NEC PG series, and maybe later, XG series.

Chuck

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Precision ISF Calibration
E-mail cmwtek@aol.com
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post #13 of 231 Old 11-21-2001, 06:26 PM
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Quote:
Originally posted by Chuck Williams
John,
I'll be posting more info on this mod in a couple of days. It will work on Sony VPH12XX and NEC PG series, and maybe later, XG series.

Chuck
Wow, I'm so excited. The thought of not having an Airplane, (1271Q) taking off next to me while watching a Movie.

Thanks in advance for sharing this tweak with us.

Jack
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post #14 of 231 Old 11-21-2001, 11:57 PM
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Chuck,

A mod for my XG135 would be most welcome. Keep me posted.

John

Building our dream theater one component at a time.. Thanks AVS for years of great advice and support!

Come visit The Pit
http://members.cox.net/home-theater/
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post #15 of 231 Old 11-22-2001, 12:09 AM
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Jumping in late here, but excellent post Mark! You forgot one thing though, you need this:

http://cgi.ebay.com/aw-cgi/eBayISAPI...tem=1664801746

afterwards for a decent burial.

Gotta say, it's been a bit boring on the forum, posts like these keep me laughing!

Curt

www.curtpalme.com - CRT tech info

www.soundsolutionscanada.com -pro audio website
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post #16 of 231 Old 11-22-2001, 06:16 AM
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I think that tractor should just about do for the size/weight of these CRT projectors :p

However they would make great sleighs with a bit of converging / tweaking ;)
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post #17 of 231 Old 11-22-2001, 06:43 AM
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I was looking at the fan in my Sony last night, it is typical to the Fans used in computers. Frankly I didn't look into the connection, but I thought it was the same voltage.

Computer fans range from $5 to $20 depending upon the bearings.

Has anyone used these in their CRT?
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post #18 of 231 Old 11-22-2001, 08:12 AM
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There was an extensive thread discussing fan mods for the 1292 some time ago. http://www.avsforum.com/avs-vb/showt...+quiet+VPH1292

Can't wait to see what can be done to the 1272.

Randy
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post #19 of 231 Old 11-22-2001, 03:22 PM
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Quote:
Originally posted by alared

Computer fans range from $5 to $20 depending upon the bearings.

Has anyone used these in their CRT?
The problem with that is these fans in these projectors have a sensor output to tell the computer that the fan is running. If the computer doesn't see this signal, it shuts down.

Also, you can't just lower the drive voltage to the fans because to get them reasonably quiet with a lower voltage they won't start up upon power up. What I'm working on is a small circuit that applies full power to the fans at power up, then applies the lower running voltage once they're going.

Chuck

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Precision ISF Calibration
E-mail cmwtek@aol.com
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post #20 of 231 Old 11-22-2001, 03:31 PM
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Hi Chuck

I also have a 10pg.

Can this mod be bought from you and installed by a knowledgeable person or does the projector have to be shipped to you?
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post #21 of 231 Old 11-22-2001, 04:14 PM
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Chuck,
Anything like this for Barco's. I have a BD808s.

Eric

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post #22 of 231 Old 11-22-2001, 05:57 PM
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Chuck,
I would like to do a fan mod to my NEC 9200.
Thanks, Kevin
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post #23 of 231 Old 11-23-2001, 05:02 AM
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Quote:
Originally posted by alared
I was looking at the fan in my Sony last night, it is typical to the Fans used in computers. Frankly I didn't look into the connection, but I thought it was the same voltage.

Computer fans range from $5 to $20 depending upon the bearings.

Has anyone used these in their CRT?
I own a Sony VPH 1270

I substituted all four 80mm original fans with the quiet pc-powerandcooling fans (rated almost 20 dB).

It was an usless waste of money since the noise is due to airflow blowing within closed spaces. If you remove the original fan from its orginal position and you let it run in open air you'll discover that it is almost inaudible. :-(

GIATENEVAICIAO
(Renato Pozzetto Docet)
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post #24 of 231 Old 11-23-2001, 08:31 AM
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Alan,

If you're even moderately handy with electronics, you can install it yourself. The problem with doing it on a 10PG and a Sony 12XX is that you have to remove the power supply to get to the two fans mounted there, and they are two of the noisiest.

Eric,

I've never had a Barco in my possesion to play with and possibly trash, so I've never tried it on a Barco, but since my basic premise on this issue is that these projectors are industrial grade units, the cooling system is designed for harsh environments and worst case situations that just aren't there in a home theater application, it really should work on a Barco, too. I'd need to know the fan voltage and polarity of the supply voltage.

Gigone,

According to my service manual, there are 6 fans in a 1270, the two yoou didn't find are on the power supply, and like the 10PG, are tough to get to and make a lot of the noise.

Chuck

Video Electronics Specialist
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E-mail cmwtek@aol.com
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post #25 of 231 Old 11-25-2001, 10:21 AM
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HI, Chuck
Were would be a good location to put a sensor to monitor the temp. on a NEC PG projector? and would you know what the normal operating temp. should be? Alos if your thinking of making a list of people who would want to buy this circuit board, or parts, please put me on your list. Thanks for your imformation. Osker
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post #26 of 231 Old 11-25-2001, 12:21 PM
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Chuck's correct. There are two more fans. I found them by chance when I took my lenses off to clean the thing out.

If you pull out the power supply boards that are situated under the lens assemblies you'll find the screened housing with the two fans on the internal side. Easiest way to get at them is probably to remove the lenses first then the housing itself.

Gordon

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post #27 of 231 Old 11-25-2001, 03:37 PM
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Hi,

Just to complete Chuck answer about sony's 12xx fans :

there are 7 fans, a little one is located at rear of pj, under IR cell board and it's not the quietest! a 40mm I think

my 2 cents!

I can't wait for your solution Chuck! quick!

best regards


Bruno Lovisi
Nice, France
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post #28 of 231 Old 11-26-2001, 04:15 AM
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Quote:
Originally posted by Chuck Williams
Alan,

Gigone,

According to my service manual, there are 6 fans in a 1270, the two yoou didn't find are on the power supply, and like the 10PG, are tough to get to and make a lot of the noise.

Chuck
To tell the truth I did find the two fans located near the power supply but I preferred not to change them in order not to reduce the capability of cooling of that section of the projector.

Could you -kindly- add me to your list of people interested about your mod?

GIATENEVAICIAO
(Renato Pozzetto Docet)
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post #29 of 231 Old 11-26-2001, 06:09 AM
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Chuck, add me to your list of interested people for a mod to a 9PG. (I had you up to my place to do a calibration last spring, in Harrisburg, PA). Thanks!

David Forbes

e-mail dforbes@paonline.com or david.forbes@waypointbank.com

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post #30 of 231 Old 11-26-2001, 10:44 AM
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Chuck,
Please contact me when you have a mod for the xg135lc ready to go. You can reach me at farich64@hotmail.com
Thanks
FAR64
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