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PHILIPS 30PF9975/12

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downunder:

The Philips bulletin might be more appropriate where the tv goes into protection from a cold start.

The bulletin states:
Remove R3031 & R3032 (150K each) from the board and replace with a 27K-5W fitted at position 3028.
Replace C2002 (330u-25V) and C2003 (680u-25V).

Bruce

vlado66:
Replace T7005 and T7006 on AUX PSU board

nicam49:
Hi Vlad, thanks for you help ! :-) I had changed those fets already, thanks-tho' much appreciated.

Hi Downunder, thanks for your time and input and for sharing your Philips bulletin knowledge,....now I'm going to get onto those changes as soon as I source the parts tomorrow...you've given me new hope....good on ya! 
Best wishes to Both,
Nick

nicam49:
In case anyone else is following this thread, the result of following downunder's advice from the Philips service bulletin, is....a result!  :thumbup: I had been troubleshooting a cold start issue; the set worked fine if I warmed up a section of the aux supply board, but couldn't find anything wrong in the warmed-up area. Changing those 2 resistors and caps - not because they were faulty, but for different values- has resulted in a fully working set. None of the parts were faulty! It was a circuit mod issued by Philips. I could have changed parts forever and still not fixed the set.
I would like to know HOW  we get access to the Philips service bulletins; if it hadn't been for downunder's knowledge and willingness to share it on the forum, this set would now be in landfill...I wonder how many more were scrapped because Philips service bulletins aren't accessible, even for old models ....once again....thanks BRUCE !

downunder:

Hi nicam,

I'm pleased that worked for you, and thanks for the feedback.

Service bulletins, whether it be Philips or any other maker, are only available to their authorised service agents. If you're not an agent, they usually give you short shrift when you make an enquiry of them.

I don't have any agencies, but over the years I've gleaned little tidbits from various sources, and had the foresight to store them for a rainy day. The brain box can store and recall only so much and then oldtimers sets in. Euras Service Data would be a good source for service tips, but for struggling techs who have to feed their starving wife and kids, it's probably not affordable.

Once again, well done and bravo.                          Bruce

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