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Philips 32PFS6402/12 black screen but audio works!
I own a 4 year old Philips 32PFS6402/12 where I suddenly don't see any image (black screen). I went back to the store and asked if it was still under warranty. Unfortunately, it wasn't. Since I am a little bit handy, I want to try to fix the television.
ANSWERS:
"@lekkervlaai There are two distinct possibilities. The power board as well as the backlight array. Since you do see the menu etc. it is most likely an issue with the actually backlight array inside your panel. Those backlight strips can be replaced by disassembling the panel. (HINT:mark the diffuser sheets so they go in exactly the way they came out). Do a search based on the actually panel, not your TV model. There should be a tag on the panel which identifies its model and maker. Of course, you also want to check the voltages on the power board leading to the backlights. Looks like connector CN8601 or 8602 depending on your model. If you need to, you can always post some images of your boards with your question so we can see what you see. Let us know what you get on those.Adding images to an existing question
Update (06/20/2021)
Okay so your panel is a TPV made panel. The backlight strips for your TV are available at places like this and many others I am sure. To check out the voltages you will need a multimeter in DC mode ( and check connector CN8601) Positive Leads on contacts 1,2,11,12 and Negative on the others. Set your meter high since some of those voltages can be in the 130V + range.
Let us know what you find
Update (06/20/2021)
@lekkervlaai it is alway a bit different. Yours is a panel that seems to have been made specifically for your Philips. Some TV’s use a bunch if different panels even for the sane model TV. That is why it is always best to find the label on the panel and search by that number as well.
To check the voltages you can simply check it on the connector.
let us know what you find out. These are not terribly complicated repairs as long as one takes their time and keeps things organized.
If it is your backlight strips the challenge will be to mark the order and the orientation of the diffuser sheets so that is something you already want to keep in mind
Update (06/23/2021)
@lekkervlaai Okay, that would only have been a confirmation of what we are currently expecting. C8601 should actually read C8607. Both U8601 as well as C8607 are actually on the bottom side. Sorry about that. The part with the question mark is a transformer.
We are at a cross road right now. We know it's the backlight. Either the power board (appears to be low voltage since your TV panel would have 3 strips with 7 LED's I would expect the LED voltage to be in the 60V-70V range) or the backlight strips. Now, from what I can tell failed backlight strips are very common for this model. Your power supply appears to be a 715g7364-p02-001-002M hard to verify on your picture :-) and that would be available at places like this. Not sure where you are located so shipping could be an issue. The backlight strip may run you a bit more. I am convinced it is the strips (call it a gut feeling) but due to the low voltage I'd opt for a replacement power supply. I'd purchase from a place that has a no question asked return policy. Just in case....Sorry if this sounds a bit wishy washy but I hate to suggest to you to spend some hard earned money.
Update (06/27/2021)
@lekkervlaai here are the points where you measure the voltage at. Black probe to pin 1 of U8601 (bottom left) Let us know what you get"
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