phonic

[full speed]

please help guys.the transformer of the photo is from phonic max500 amplifier and is shorted.any idea what volt is the secondaries?two blue is higher voltage and the two yellow lower the black one is common.the primary input is black and yellow.white and red is connected together.blue is not connected to board.on schematic is no info the smoothing capacitors is 63volt. i have to by new one or repaire the brocken one.thanks for any help

 

[huggygood]

https://elektrotanya.com/phonic_max_250_500.pdf/download.html#dl

 

[full speed]

huggygood this is not the full manual.i have the full one and is no info about transformer output.

 

[huggygood]

look at the power supply diagram, with your measurements directly on the transformer, you can deduce which goes where.
And if you have 63v capacitors, you already know roughly the AC secondary voltage, +/- 32 to 37 Vac

 

[RS232]

Is it even worth repairing ?
Here in the UK you can get one of *bay for less money then a new 35/0/35 toroid transformer.
Other issue is it's a low profile toroid and the chances of finding one is close to nun.

 

[full speed]

No i think is not worth to repair but if i know the output voltage i have few extra transformers and may be fit one or get one for high voltage and another one for low.or i send the old one to winding repaire shop to repaire.new amp cost 180€.

 

[RS232]

In that case any transformer from 30/0/30 to 35/0/35 (160/200VA) will do.

 

[full speed]

guys i have done the test with one samson servo 300 transformer 35-0-35 volt and it works.the only problem is not space inside the case i do extra separate box for trans.the amp is not for my mobile jobs and stays allways on studio for 1inch high frequensy drivers.thanks for answers.maybe later i by one smaler for 55euros

 

[alexrentiers]

look at the power supply diagram, with your measurements directly on the transformer, you can deduce which goes where.
And if you have 63v capacitors, you already know roughly the AC secondary voltage, +/- 32 to 37 Vac

I also think that you need to start with the power supply diagram! This is the starting point and there are already further dealt conclusions!