compatible inverter with different rev (master slave)

[freecom]

hello

please help me

i have philips 42pfl7962d ......start with light only to 1/3 of screen (left)
after 2-3-4-5 sec ....closed

lcd have inverters master slave vit 71043.50 and vit 71043.51 rev 0

i change with new....same number but rev 2

now no light.......never light

is not combatible because different rev......from rev 0 to rev 2

thank you !!!

[kevinm34232]

Re: compatible inverter with different rev (master slave)

Can you give close up pics of your original inverter's #'s especially sticker #'s..

[jbfr_54]

Re: compatible inverter with different rev (master slave)

Hi,
I recently fixed one of these sets for an inverter problem.
The set was just not starting as the master inverter was failing.
I found that the rev 0 inverters where often failing and kits were available
form different sources to fix them (4 MOSFETS, the driver IC BD9897FS and sometimes a zener and capacitors).
In addition to that I found that these inverters were to be replaced by rev 2 who are more reliable. I found a set of modifications to upgrade the original master and slave PCB's.
I fixed the master by replacing the decoupling caps (bulging) and the IC but the rest was OK.
I then applied both modifications ans the set is back alive.

I also found equivalent parts for sale in germany but I did not tried them.

Finally back to your question, both Rev 0 and Rev 2 parts are fulmly compatible, Philips recommends to replace original parts Rev 0 by new Rev 2 cards (both master and slave).

According to your diagnosis, I assume slave card is failing while the master seems to be alive as the left of the screen lights before passing into security mode because the slave is failing.

Here is the adress for replacement PCB's :
http://www.pcpartsltd.com/new-invert...5037.html#show

http://cgi.ebay.fr/Brand-NEW-LC420WU...item2a1de750ee

The PCB repair and update instructions can be found here :
https://cdn.badcaps-static.com/pdfs/...39dfa5950e.pdf


Hope this helps.

Regards.
Jean

[jbfr_54]

Re: compatible inverter with different rev (master slave)

Just an additional information, as far as I remeber, original inverters are 6632L-0470A and 6632L-0471A at rev. 1.2 and they are to be replaced by same parts at Rev. 1.3
Jean

[freecom]

Re: compatible inverter with different rev (master slave)

many thanks......jean