CurtPalme.com Home Theater Forum

barcoguy · Joined: 05 Feb 2008 Posts: 128

After a long time of board swapping and wire unplugging and replugging I think I have a dead CLM or one that needs some magic put back in it. The projector acts totally dead just the "standby" fans run. If I hit the power button on the remote one light flashes for a 1/2 second on the CLM but nothing happens. I tried to press the reset button but nothing.

**AnalogRocks** · Posted: Wed Jun 25, 2008 2:37 am Post subject:

Did you let the magic smoke get out? Very Happy

Nashou66 · Joined: 12 Jan 2007 Posts: 16171 Location: West Seneca NY

It could be anything to cause it not to start the HVPS. The light you see is most likely the remote light telling you that a button was pressed. the only way to know for sure is to test your boards in another working set. If you dont hear the crackling noise the HVPS is not starting.

Athanasios

barcoguy · Joined: 05 Feb 2008 Posts: 128

HVPS is ok... I did that I have a few local friends that I have converted to CRT nuts one has an 8000 I put the CLM in his machine and no dice.

HAHA thank goodness NO magic smoke came out. Its very hard to put back in Smile

barcoguy · Joined: 05 Feb 2008 Posts: 128

I thought I read someplace that an specific IC dies or something like that

Nashou66 · Joined: 12 Jan 2007 Posts: 16171 Location: West Seneca NY

you could try a different DPB, if that is faulty the CLM wont work either. Then at least you'll know its only the CLM. it might be the voltage regulator U3, its har to test unless you have extender cards. you could solder a wire to the out put to measure the voltage.

i'm not sure of what other IC to chech but you could borrow someones CLM and at least swap out the removeable chips one by one and test.

Going out on a limb here,Marquees also have a dallas chip , not sure if it like the one in the sony G90 that causes problems al ot but it might be worth a look.

Athanasios

aspec2 · Joined: 10 Apr 2006 Posts: 549

I would clean all sockets on the board. Corrosion is a known problem.

barcoguy · Joined: 05 Feb 2008 Posts: 128

Ok will look into this and get some contact cleaner. THANKS!

aspec2 · Joined: 10 Apr 2006 Posts: 549

Get DeoxIT. It is expensive but majic juice should be expensive..

Walt

barcoguy · Joined: 05 Feb 2008 Posts: 128

Thanks Walt I got that cleaner I am going to start pulling chips

barcoguy · Joined: 05 Feb 2008 Posts: 128

Cleaned all the contacts
Changed DPB
Nothing

I need to test this voltage regulator or is there anything else

Not sure on the Dallas chips

Nashou66 · Joined: 12 Jan 2007 Posts: 16171 Location: West Seneca NY

I havnt really looked at the Schematics for the Clm to see what would go bad on it I just looked it over for the Modification thread and didnt pay much attention to any components that would go bad to not cause it to work. Always start with power supply rails when trying to figure things out. if rails to chips are not showing power where there should be you have to back trace and follow the power rail to a point where there is power and then start diagnosing, that is basic common sense, but always start with the power incoming to the board. On the CLM there are so many parts it could be anything, Especially if the machine does not power up.

Not sure if you have the service manual but here is a link for you, you can down load schematics and the service manual here, read through it as it describes how the CLM works, from there you can decide where to look for the problem. or just send the board to Curt or Tim. I really dont know how to properly diagnos things as well as the experts, this is just new hobby learning stuff for me that has me interested. I like knowing how things work so reading the service manual a few dozen times has gotten me closer to my goal.

http://homepage.mac.com/nashou.66/FileSharing9.html

Athanasios

1031 · Joined: 22 Mar 2006 Posts: 657 Location: Finland

I dont remember how marquee acts when vim fuse(s) was blown, but that can be case. Check those two green fuses near multipinconnector.