110 Volts Power Amplifier Accidentally plug in to 220 V

i accidently plug 110 220 power supply

I need a help and or analysis on which phase on the amplifier board should i check first.. All i know is these was causing by voltage overload. This is an imported amplifier (accepts only 110volts) plugging in to a 220 Volts wall outlet. When i open the system.. i noticed burned fuses and caps. Is the voltage regulator (IC) affected to this kickedOff? ... calling out electronic ethusiast in there....help....

thanks!

Hardware Tech..

power supply 110 plug in to 220

Hello.
You should replace all visually detectable burned components, the open or shorted rectifiers, capacitors and resistors and try to make a schematic diagram by observing the power supply section and disconnect the amplifier section from the power.

Then, energize the power supply properly and check presence of voltages, and if their values correspond to some value under the electrolytic capacitors rating.

Measure the resistance from the ± power supply rails to ground on the amplification section, should not be near zero.
Only then could you attempt to reconnect the power and amplification section.

Ahhh, ... cross your fingers too.

Miguel

plug 110 to 220

In such a case, usually the "priority" of damage/problem is from output stage backwards to the input stages, from the high power components to the low power/small signal ones. So you try to check components in that order. It is almost your semiconductor components at output stage are blown out all.

schematic diagram of 110 volts power supply

Seguro que los siodos y filtros de la fuente estan quemados, remplasa todos, luego mide los componentes de la etapa de salida, estos probablemente sigan bien, ya que esta etapa se calcula a un nivel muy inferior al soportado por los componentes, para dar un margen amplio de respuesta

I suggest you do the following:

1. Find the original (before burning out), DC output voltage levels of the power supply section. (Maybe this will be mentioned on the PCB somewhere. Or, you can give the ICs a closer look, for e.g. 7805 is a 5V voltage regulator, 7812 is a 12 volts regulator...)

2. Separately, supply an equal DC voltage using a DC source to the amplifier stage i.e. bypassing the power supply section of the circuit completely.

3. If the amplifier works, it means that only your power supply section blew away. Otherwise (if the amplifier does not work)....it means that both the sections have been lost. It might be better (easier and maybe even cheaper) to buy a new piece of equipment rather than trying to fix this one.

HOPE THIS HELPS!

don't plug to any power source now.
First check the burnt components.
Normally first the fuses & rectifiers r burnt. Then there is possiblity of condensors in power supply being blown.
Check the output devices of ur power amplifer.
Check whether power supply if based on mains transformer( anlogue) based or smps type.
give some info after doing above then we will be in a position to guide u further.

replace all visually detectable burned components, the open or shorted rectifiers, capacitors and resistors .observe the power supply section and disconnect the amplifier section from the power.

Forgive me if I am mistacken, but there is a transformer somewhere there, isn't it? I guess your are refering to SMPS or is it something else? if there is a transformer, then the problem is up to the input of the transformer. Change everything up to this stage and it will work again.

If there is not a transformer involved, then you need to do reverce engineering and change all components that are directly linked to the input power, as these components are only effected. If you have a regulator, I don't think that high voltae or high power can pass through it after destroying it.

D.