PF receiver's LED not lit when connected to 9v battery

[mikezang]

I just received two PF receivers from LEGO, when I connected it to 9v battery, the LED on it never bright, I am not sure if this is normal, does anyone help me? How can I know if it does work iwth out problems?

Bu the way, I have no PF remote but have RCXs.

[Lakop]

Wrong battery pack maybe. It looks like an old one.

H

[mikezang]

Wrong battery pack maybe. It looks like an old one.

H

Yeah, that is.old type box, but I used extension wire to use old battery box, is this ok?

[JopieK]

Check the site by Phillipe Hurbain (philohome) on the PF internals and use a multimeter to debug!

http://www.philohome.com/pf/pflights.htm

[trekman]

Those receivers will only work when you power them through the PF battery box. I normally use a Lego railway mains transformer, but you still need to connect it to an empty battery box, and then connect the other receivers on top.

[mikezang]

Those receivers will only work when you power them through the PF battery box. I normally use a Lego railway mains transformer, but you still need to connect it to an empty battery box, and then connect the other receivers on top.

I am not sure what do you mean? Do you mean a regular battery box can't be used to receiver? Can you show me a connect figure?

[freakwave]

I am not sure what do you mean? Do you mean a regular battery box can't be used to receiver? Can you show me a connect figure?

Have a look at this picture from Philo's page:

The power for the IR needs to come on the two outer wires (9V and 0V) whereas the converter cable puts the voltage on the inner wires (C1 and C2). In that way the IR receiver does not get a supply.

So two possibilities:

First you cut the cable and solder C1 and 9V together and C2 and 0V

OR if you do not want to damage the cables you can

Secondly connect the wires (9V and C1 as well as 0V and C2) within the two PF connectors. This requires a bit of patience and aluminum foil or thin copper wire.

To see which contact you need to connect see Philo's page. Conveniently the two pairs of contacts to connect are separated by the plastic bar whcih makes this task a bit easier.

If you want to stick to a LEGO purist solution you need to connect a PF battery box the following way:

OLD Battery Box ----Converter Cable ----- NEW PF Battery Box --------IR Receiver

This way the PF Battery Box does the job of connecting the two pairs of contacts.

PS: Philo, I hope it is ok that I directly linked the pictures, if not let me know.

Edited October 25, 2013 by freakwave

[mikezang]

I found this How to run Power Functions on Older 9v System PF adapter Tutorial(7147KB pdf) and

A variety of 9V elements can be controlled with the Power Functions system, including all motors (the speed control feature works with them as well) and all types of lights. It is also possible to integrate PF elements into the 9V system to a limited degree. For example, the PF motors can be controlled with 9V battery boxes and switches, but PF receivers work only with PF power supplies.

[kabelbinder]

Is the cable connected in the right way? I think the light gray connector have to put under the the darkgray receiver-connector? Please correct me if im wrong!

[mikezang]

If you want to stick to a LEGO purist solution you need to connect a PF battery box the following way:

OLD Battery Box ----Converter Cable ----- NEW PF Battery Box --------IR Receiver

This way the PF Battery Box does the job of connecting the two pairs of contacts.

Great! I got it works, thank you very much!

http://www.geocities.jp/mikezang/lego/Img/pfbattery1.jpg

http://www.geocities.jp/mikezang/lego/Img/pfbattery2.jpg

Edited October 28, 2013 by Rick
Please keep embedded images to a maximum of 1024 x 768 pixels

[mikezang]

Now I can use RCX Remote Control to control PF.

http://www.geocities.jp/mikezang/lego/Img/pfremote.jpg

Edited October 28, 2013 by Rick
Please keep embedded images to a maximum of 1024 x 768 pixels