I cant plug my 120v input vamp2 power adapter into a 110v output voltage regulator its dont works

A voltage "regulator" would only limit the voltage from going above a set amount - it wouldn't do anything for a power dip. To protect against that you really need an Uninterruptable Power Supply (UPS) which would switch to battery power in case of a power dip. Do you really think you're home electrical system is that unstable? Are your problems happening in different locations?

Look carefully at the adaptor and see if it takes any voltage besides 110 (it will say in very tiny print, you will need a magnifying glass). if it does NOT say 220V or 240V then you friend the adaptor. Get another adaptor - most are "dual" voltage meaning they run in the U.S. or overseas.

Also check for "polarity" (which part of your plug is + or - ).

If this unit is running on a wall wart power adapter, it is possible that the adapter is NOT the correct one. Make sure it is the orginal adapter for the unit. A lot of Korg stuff requires adapters with more filtering or regulation. So called "Universal" adapters usually will NOT work. Please specify your model number as "TR" doesn't compute.

hi,
You have to check the working voltage of the adapter of you device. If it purchased from US then it will be 110V. I think the Line voltage in Australia is 220V.Also You have to check is there is any input voltage selector in the in its adaptor . If it there you have to change it to 220V. If there is no such selector then you have to buy a 220v to 110v converter .Then connect the out put of that converter to to your device. You can by this converter at any electronic spare part shope near to you. Or you have to by a new 9V 1.3Amps AC adaptor. When you going to by the converter or a new adaptor take the device. If so they will explain you how to connect the converter or adaptor . By changing a fuse you can't change the operating voltage. If The adapter is designed to use in 110V then the fuse will blow. If you change the fuse and make more experiment with it it will make the full system useless.
ok

Did you just use adapters or actual step-down transformers?
A lot of equipment today is 110/220 auto-switching, but if you get something built for 110V (120V, 100V, markings may vary) only, then you need more than an adapter, you need a transformer!

You should find +/-15 volts and +5 volts as well as the phantom power... but that light can come on at much lower than desired voltage.

Note that the regulators are current limited so a short on the mixer board can kill one of the voltages.... but you are not getting any input from teh switching portion of the regulator so the switching part of the supply is apparently dead. To replace the supply you would have to call Behringer at 1-425-672-0816 to get the part number and an incident number and then call FullCompass which is their part distributor now.

When working on a switching power supply, use an isolation transformer for safety and use a 60 watt lamp in series with the power cord to limit current during testing.

The circuitry will be SIMILAR to the power supply found on page 9 of schematic you can download at:

http://elektrotanya.com/behringer_ub1204fx_pro.pdf/download.html

Click on the following link:

http://www.yamaha.com/yamahavgn/CDA/ContentDetail/ModelSeriesDetail.html?CNTID=2258&CTID=205000

If you then click on the "Resources" tab, you'll be able to download the manual. The A/C adapter you're looking for is the "Yamaha PA3B Power Adapter", which has now been discontinued. You can use an universal power adapter instead using these specifications:

Input: AC 120V, 60HZ
Output: DC 12V, 700mA
Polarity: Center Positive (+)

Hope this helps. If so, please rate. Thanks.

You should immediately quarantine what you plugged in and compare it to the correct one.

IF you put too low aq voltage of the CORRECT polarity nothing should have happened.

If you put backwards polarity of any voltage the regulator is probably fried internally and possibly an input bypass cap. Also if you put an AC adapter and it wants a DC the same destruction could happen.

if you put too high a voltage, possibly the power input cap may be bad.

It appears that the correct supply is the PA3C which is a 12 volt, 700ma with positive on the center pin.

Unit has wide range power supply will operate on 100 volts to 240 volts without any change other than possible plug adapter to mate with each countries receptacle standard.

These of course have to be connected to an external amplifier and speaker.

Check that your amp is working first.