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Phillips 28PW6332/05 Software Protection

 
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oatelly



Joined: 22 Sep 2005
Posts: 5

PostPosted: Sun Sep 25, 2005 7:12 pm    Post subject: Phillips 28PW6332/05 Software Protection Reply with quote

I've spent a while narrowing down the problem with this TV. One day it shut off and started continuously squeeking with the power LED continuously flashing in synch with the squeeks. I can't get it into the service mode - i.e. it keeps on squeeking when I short the two service mode pins together.

From the service manual I've deduced that it's in Software protection and either SDA/SCL shorted (what are they?) or No +5Db or +8Sc at microcontroller.
The control part of the power supply is working properly.
I can't find where the +5Db and +8Sc are to probe and see if they are correct or not.

Any help or thoughts would be greatly appreciated as I've run out of ideas.

Thanks,
Olly
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oatelly



Joined: 22 Sep 2005
Posts: 5

PostPosted: Mon Sep 26, 2005 5:47 am    Post subject: Reply with quote

An update this morning:
I discovered that the capacitor is position 2420 has a resistance of only 5 Ohms. Removed it and it's got a nice brown hole in it! Now I've just got to find a suitable replacement and see if that will fix it.
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