Power Adapter ISSUES

[Hughesie]

hi guys i really need your help on this one

i have a phonic mm1002a (my first mixing desk)

and dug it out a few days to discover that the power adapter is faulty and doesn't work at all. i would use a universal adapter except it has a unique powe input (circular pin design) not the standard kettle plug design

please help me it has become an item that i tresure


and don't suggest phonic i have already tried them

[Chris15]

Are you sure that the power supply is in fact faulty? Try checking it with a meter. If it is dead, perhaps try sending it to a service dept. If it is not dead, perhaps it is the power connector. More details might help us with with more ideas. Voltage, connector images, etc. A service type establishment may be able to get a service manual which would enable them to troubleshoot more effectively.

[Hughesie]

pictures are coming here is what it says

input 240v-50hz
output 16.8v x2 ac 0.5a

i think it might be a loose wire not being an electrics expert i can fix it

[Chris15]

Originally Posted by Hughesie89

pictures are coming here is what it says

input 240v-50hz
output 16.8v x2 ac 0.5a

i think it might be a loose wire not being an electrics expert i can fix it

A couple of questions:
Do you have a multimeter?
I am guessing that this is a heavy, transformer based supply?
If so, you should find that between pins you should be able to find the transformer windings. I would be guessing a number in the tens of ohms.
How many pins are there in the connector and any indications of how they are wired?

The thought of a loose wire would seem logical.

[Hughesie]

ok i have taken some pictures and will upload them now

i have treated the adapter very well

i took the cover to have a look and i don't even know what am looking at

[Hughesie]

ok here is the web address th acess the pics

http://www.villagephotos.com/pubbrow...der_id=1660428


also i don't have a multimeter

[Chris15]

Pity about the multimeter. One of those 3 pins will be a common and the other two will each be 16.8 volts AC. At least that would be my guess. Can you take the cover off?

[Hughesie]

yeah i'll do that now

[Hughesie]

The pictures are up



http://img.villagephotos.com/p/2005-...4/DSC01377.JPG
http://img.villagephotos.com/p/2005-...4/DSC01379.JPG
http://img.villagephotos.com/p/2005-...4/DSC01378.JPG

[Chris15]

The left hand side in the first picture is the mains input. It is at this point that I MUST warn you not to plug this in and turn it on without the cover properly attached.

Picture 3, can you pull the heat shrunk connections off? I am thinking that they are removable terminals.

Also could you open the connector up? There might be a disconnection there.