I have one AudioSource AmpOne amplifier. Someone has tampered with the transformer and has changed its original windings. Can anyone help me know what is the correct AC voltage that should be present

Ground and Remote wire ? Common issues I have run into.

How loud do you expect it to be?

More watts doesn't mean more loud but it gives you more headroom for cleaner reproduction of very loud passages. Distortion will kill a speaker faster than clean signals will.

http://en.wikipedia.org/wiki/Audio_power

Register and download the manual for free at retrevo.com

http://www.retrevo.com/support/Audiosource-AMP100-Amps-manual/id/18809dj391/t/2/

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I know this thread is a couple of years old, but this may help someone with the same problem.
There doesn't seem to be a supply of A-H300 transformers for direct replacement, but you can utilise the transformer from the MKII version of the amplifier with a little modification.
The output voltages from the MKII transformer are exactly the same, but two of the connectors have changed, so you will need to salvage these connectors from the original transformer to modify the MKII version.
The physical size is also a little different, but it will fit. I found that I had to remove the excess 'tags' that remain on the lower circuit board to give enough space for the transformer to align with two of the original mounting holes & I drilled one extra hole in the replacement tranformer baseplate so that a third screw could be used.
Hope this helps someone!

You could get an outside box called a Step down transformer that would deliver 110 volts to the amp. A quick look on Google should come up with prices.
All you need however is a new transformer. If you can find the specifications for the one in the amp it will be much easier to get a new one. All you need to know is the outputs of the secondary windings of your amp's transformer and current ratings. The primary winding will be 240 on the new one and 110 on the old. But you can get one with both!
If you ask Crown they might even convert it for you or put you in touch with someone who will.

The only simple way that I could think of is for you to purchase a STEP DOWN TRANSFORMER rated at 500 watt, 110 volts, 60cycle. The transformer inside that amplifier have four output 12v and 15v DC.2amps It will be hard to get the transformer for that! Hope that might help you! taah!

I would contact Sherwood as Transformers are deemed to be safety components and should be replaced with excat parts or those recommended by the maker.

This is not a transformer problem, it would blow fuses if transformer shorts out. It is hard to say, what could cause the problem without looking at the unit. But, you mentioned new power cord with grounding. That looks suspicious to me. Tyr to diconect grouding wire, and see if that helps.

Hi and welcome to FixYa,

I have to agree with you that that component is a thermal fuse. In my country, they are readily available in most electronics/hobbyist parts store. These components are also used for small motors and therefore would also be available in some (but not all) kitchen appliances parts stores. A temporary workaround is to install an ordinary fast blow fuse.

Just a start, do postback how things turned up or should you need additional information. Good luck and Thank you for using FixYa.

If your transformer is fried then you will have to replace it of course, but if it has only opened the thermal fuse that is tucked into the primary windings then you can replace that and not have to replace the entire transformer. Be sure to use the same temperature and type thermal fuse as the original. You will find the thermal fuse tucked in where the ac power in wires go into the transformer and you may have to clear some plastic out of the way in order to get to it. Be very very carfull that you do not nick or cut or break any of the magnet wire that makes up the windings of the transformer. Good luck.