Turntable - Problem with AC Adapter

[GeorgePal]

Hello!

I have a Philips FP146 turntable from the '90s!
Yesterday I tried to use it after at least a decade. It didn't work. I opened it and I realized that its AC adapter is not working properly.

The name and serial key of its adapter is:
AMC 8549
3111 158 30050

Is there any possibility that I can find its technical info in order to replace it with a new one?
The only informations I can find about on the turntables are:
220V, 50Hz, 14W

Thanks in advance!

[Mooly]

Somewhere on the adapter it should (I would have thought) give the voltage and whether its AC or DC output. The 3111 bit sounds like a Philips part number.

Maybe close up pictures would help.

Are you sure the adapter is faulty ? Maybe a cable break or problem with the connector. Getting a new adapter should be easy as long as we know the voltage, the polarity and whether its AC or DC.

If you don't get much response I can move this over to "power supplies" forum.

[GeorgePal]

Thanks for all of your help Mooly!

I'll post some photos in about an hour because I have a job to do in the next our!

[Mooly]

No problem... I'll be around later if no one else jumps in.

[GeorgePal]

The last one is from the turntable.

[Mooly]

I was thinking of a little "wall wart" when you said adapter.

That's a simple mains transformer with one secondary. Is it open circuit on the mains input side ? Many have a thermal fuse embedded in the windings. Check the winding on a meter on ohms range, It should read low resistance across the mains input side.

[Mooly]

More info... if you look where the secondary connects in the TT you will find either a single diode rectifier or a bridge rectifier. Close to this will be a "large" electrolytic capacitor. If you look at the voltage rating of the cap we can work backwards to deduce a reasonable ball park figure for the transformer voltage.

If the thermal fuse is open circuit then there is always the possibility that a fault (such as a shorted rectifier etc has caused the tranny to overheat. It may or may not be just a faulty transformer.

[Rundmaus]

You can download the service manual at:

70FP146 Service manual

The transformer feeds a very simple power supply consisting of a bridge rectifier and reservoir capacitor. Output voltages are an unregulated 15VDC and 8VDC regulated via a voltage regulator IC.

So any transformer giving approx. 15VDC after rectification will do.

Rundmaus

[Mooly]

That should help... thanks.

[GeorgePal]

Thanks for your help!! =)
Can u suggest me a transformer to buy from amazon.co.uk or ebay.co.uk? I don't want to buy a new one which won't work!

Thanks again! =)