HELP

[jap813]

Ok I finished my second le and I do not have 3.3 or 5 volt leds? I have checked and rechecked  solder joints and polarity and everything looks good

[ponddude]

Are the LEDs in correctly?

Did you put the wrong regulator in the wrong location?

These are just a couple of simply things to try out real quick...

[jap813]

everything is exactly like my first le and that one works great, leds in correct and regs in proper locations

[tbone321]

Check to make sure that you are getting voltage to the transformer and something out of it.  Then make sure that the rectifier is installed correctly and you have a DC voltage there.  I would also check the caps and make sure that they are also installed correctly.

[jap813]

ok here is the deal the transformer and the heatsink closest to the main heatsink are getting hot to the touch and my other board does not do that

[tstewart]

Sounds like you have a short on the board or possibly a chip in backwards.


Todd

ok here is the deal the transformer and the heatsink closest to the main heatsink are getting hot to the touch and my other board does not do that

[tbone321]

You need to check the 3V regulator and make sure that it is in fact the 3V regulator and not a triac or that the two regulators are not reversed.  I would also look for shorts, especially on the lower 100uf cap.

[jap813]

ok 5 volt led is on but it is real dim and no 3.3 led

[Caliente Christmas]

Would you be able to take a close up pictures of both sides and post it?

[jap813]

no my camera is broken right now

[jap813]

i switched regs with the board that works with the one that doesnt and still nothing. I also made sure they are in the correct place. Could it be the transformer or is it something else?

[KeithTarpley]

Greetings,,,

Ok, check that the transformer has the pin 1 next to the edge of the board.

Check that the round rectifier has the plus polarity next to the plus sign on the board.

Check that the H11AA1 chip below the transformer is properly inserted.

Check that the 4700uF cap above the transformer is inserted correctly.

All, just in case.

Keith

[jap813]

transformer is correct
rectifier ic correct
h11a1 chip is not in yet I was doing power test
4700uf cap is correct

[RJ]

The fuse is in and good isn't it.  Hey it has been done before and since no fuses went out with this shipment I have to ask.

RJ

[jap813]

yes fuse is in and good getting power to transformer but not sure about out of it