Question about Philips 32MF231D Television
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Posted on Jan 02, 2017
SOURCE: horizontal and vertical lines
I am having the same problem with my TV. I believe that the Y-Buffer Driver IC's are bad. There are two small boards on the left hand side(looking at the TV from the back) with 6 small heat sinks on each of them. If you look closely at the boards, it ill say Y-BUFFER on them. There are ribbon cables that run from them to the Plasma screen.
In my TV, several sections of the screen do not have lines in them. These driver IC's are not hot, however the sections of the screen that have lines in, the drivers are hot to the touch. In order to verify that the chips are indeed bad, I am going to swap one that I think is bad with a good section and see if the problem moves. If this is the case, the boards can be swapped out, or chips replaced depending on what kind of parts I am able to find. The chip that they use is SN755867. I haven't been able to locate a source for the chips yet.
Posted on Jun 29, 2008
Measure the connector from the logic board to the power supply the second pin from the left it will say Vs_ On if the set has 3.1 volts the problem is the SSB or the logic board. On the logic board there should be a solid led and a flashing led that shown that data id flowing and the problem is the SSB. The SSB is easy to replace just remember what you tokk loose and from where. You probely will save money that way. If the set is in warranty or just out of warranty contact Philips 1-888-744-5477 and see what they can do first.
Posted on Aug 20, 2008
what you have is a bad inverter transformer on the inverter board. I nashed my teeth on this problem for a long time because no diagram is avail. Here's the fix for you:
Remove the invertor board. Take an Ohm meter and measure the outer 4 legs of each transformer. Between pins 1 and 4 (side with the white dot near leg 1) you should read .3 ohms. This side is usually good. Between pins 5 and 8 you should read approx 1.8 to 1.9Kohms. ANYTHING above that is a defective transformer. I'm sorry I do not have the part number for this, I've just been using an old board from a set with a cracked panel. If I can find a part number I will try to post. You can try Encompass parts on the web, they may be able to supply part number and transformer with location number.
Posted on Mar 19, 2009
SOURCE: magnavox 32mf23id/37 wont tun on
Had the same issue, I replaced two 1200uf caps on the power supply board and now it works fine again. Remember to replace the caps with caps rated for at least 35wvdc.
Posted on Mar 27, 2009
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