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RCA M50WH92S (DLP) - Will not turn on   Goto page 1, 2, 3, 4, 5, 6  Next  
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TonyC1



Joined: 17 Mar 2009
Posts: 74

PostPosted: Mon Jun 15, 2009 11:03 am    Post subject: RCA M50WH92S (DLP) - Will not turn on Reply with quote

Chassis ATC361B

When I plug it in the blue power light is on & then goes off after about 5 seconds. If I push the button it lights again & then shuts off. No blinking. The bulb appears to be fine. Any suggestions would be greatly appreciated!
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TonyC1



Joined: 17 Mar 2009
Posts: 74

PostPosted: Mon Jun 15, 2009 11:51 am    Post subject: BTW - lamp looks good Reply with quote

But how can I test it?? First try on fixing a DLP.
TonyC1



Joined: 17 Mar 2009
Posts: 74

PostPosted: Tue Jun 16, 2009 10:58 am    Post subject: Picture of power board Reply with quote

Hoping this will help in directing me where to test. The fuse is ok, there are no obvious bad caps, the coils are continuous, there is one bad looking solder on the bottom where a pin from a heat sink comes through, no other obvious breaks or burned areas. There is a click when plugged in or attempt to hit powere button but just one & no flashing before it goes off (in 3-5 seconds) - not sure whre to procede.

TonyC1



Joined: 17 Mar 2009
Posts: 74

PostPosted: Mon Jun 22, 2009 5:02 pm    Post subject: Help needed... Reply with quote

Trying to fix dads DLP - Jesse this is what happens when you helped me fix my Sylvania LCD - now I am the family "expert" - hope you find time to give me some more pointers.
TonyC1



Joined: 17 Mar 2009
Posts: 74

PostPosted: Sat Jun 27, 2009 8:09 pm    Post subject: BTW - nothing attached to the ground Reply with quote

There is a ground (see lower left of image) - looks like there should have been someting connected there - is just for testing or is ther a missing wire?
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TonyC1



Joined: 17 Mar 2009
Posts: 74

PostPosted: Tue Jun 30, 2009 5:24 pm    Post subject: I guess these tvs are tough to work on Reply with quote

Also tried Ask an expert (JustAnswer) & got no reply - bummer! I got an est for a new powersupply board but am not sure its the problem.
JTS1957



Joined: 21 Jan 2009
Posts: 2395
Location: Far, Far Away

PostPosted: Tue Jun 30, 2009 6:20 pm    Post subject: Reply with quote

The two connectors on the right appear to be well labeled (although I can't make it out). Are all voltages specified there - there?
TonyC1



Joined: 17 Mar 2009
Posts: 74

PostPosted: Wed Jul 01, 2009 7:52 am    Post subject: Connector labels -picts Reply with quote

A

B

JTS1957



Joined: 21 Jan 2009
Posts: 2395
Location: Far, Far Away

PostPosted: Wed Jul 01, 2009 8:11 am    Post subject: Reply with quote

So are they there or not?
+6VS & +13VS I presume are "Switched" supplies; There when set is "running;"
+5V_STB I presume 5V standby; there whenever set is plugged in;
+12VA I presume 12V "All Time;" there whenever set is plugged in.
TonyC1



Joined: 17 Mar 2009
Posts: 74

PostPosted: Wed Jul 01, 2009 8:33 am    Post subject: Sorry - Novice at work Reply with quote

I am not a trained tech so I need direction on where to place my probes when testing for these

Should I remove baord - plug in & place my probes specifically where when checking each pin. Don't want to cause more problems by shorting someting out.

Concerning my previous post above - is there supposed to be something connected to GRND 1 seen on the left side or is this where I place my neg probe when testing the pins for voltages (DC voltages?).

Thanks in advance for your help!
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