Philips BDP3100 Problems

JaguarLover · 15 Dec 2012 at 20:28

The blue ray player does not turn on, there is no noise coming from the player, no 3rd party divices/software have been fitted to it so I have no idea, is it a faulty board? Also the product on the transformer for the power has white like paste on some of the components but testing the power with a tester the transformer is transforming power. Any ideas, need more info, just ask
-JaguarLover101

lucid · 16 Dec 2012 at 00:12

These kind of "won't start from cold" issues are often related to faulty capacitors. It seems par for the course now that the lowest spec components are used.

Faulty caps sometimes show up as bulging from the top or occasionally the bottom. If you're comfortable working with *live circuits* then a quick test is to put some heat on a suspect component. Caps can be temporarily coaxed back to life if warmed with a hair dryer. It won't fix the problem. But its a quick way to fault find and confirm what could be a relatively quick and easy fix.

* The usual safety precautions apply when working any electrical circuits, and especially those involving a 240V mains supply. It's also at your own risk if you decide to proceed.

JaguarLover · 16 Dec 2012 at 08:10

JaguarLover said:
power with a tester the transformer is transforming power

But it is giving of power and I am alright with circuits, please can you explain that method in more detail
-JaguarLover

JaguarLover · 16 Dec 2012 at 08:16

But wait what is that white paste? Is that the sign of a dead board? I will photograph the inside of the board

JaguarLover · 16 Dec 2012 at 08:43

Here's a picture

JaguarLover · 16 Dec 2012 at 09:05

I heated up the capacitors but the player still wouldn't turn on, any ideas?

lucid · 16 Dec 2012 at 09:53

The white stuff is glue. There are a few theories about why it is used. Some suggest it's to aid in manufacturing; to keep large components in place when wave soldering. Others say it's to reduce vibration as the components cycle. Another theory is it's extra insulation. Whatever the answer, the white stuff isn't a sign of a dead board. But if the component that is glued needs to be replaced then its good practice to re-glue to new part.

Ordinary silicone or decorators caulk mustn't be used. Some of those products are conductive (so not good!) or they leach out acetic acid when curing. That's mildly corrosive, so again not good. You can smell the acetic acid. It smells like vinegar. "RTV silicone" is a suitable replacement. Alternatively a dab of hot glue does the trick.

Looking at the board layout that big cap is right next to a transistor bolted to an aluminium heat sink. So you have a component that is prone to failing due to drying out situated right next to a source of heat. That's good circuit design.... not!

If it's not the caps then the next area I'd look at is the transistors and also bad solder joints. For transistors the quick search method is to cool them with a blast of freezing spray. An intermittent transistor will work when chilled.

For more on test and repair methods have a look at this forum or Google similar

JaguarLover · 16 Dec 2012 at 12:11

After a bit more testing (and a small electric shock :/)
I have discovered the fault, you see the yellow and black component in the middle of the board, that's the problem! There's 240v on one side and nothing where there should be 24v so that's the problem the transformer is faulty. Anyone know the best place to get a new board is, many thanks
-JaguarLover