Hi lex thx for the post.

I followed all the steps to fix the power supply .The speakers in but never heard , not where the problem for please need your help.

Sorry, I do not know of your problem and Lex has not been on for quite a while. If you want to give me some info, I can see if I can be of help.

Are you using the audio control to turn on the power?

I assume your fix worked because you have it in the phones. Make sure all of the connectors inside the box are properly seated and did not get twisted or pulled out when you close the box.  Make sure that the green led is on and stays on when you apply power. Carefully plug in your inputs inputs and outputs and recheck the input source, DVD player, PC, or whatever you are using is on and running. Inspect the audio control plugs for damage, bent pins etc, and are plugged in and seated correctly. Does the red led on the audio control stay lit and when you press the power on the audio control are all the led lighted?

Then let me know what is happening please.

Everything you show me is good, but what I can not see is the inside especially how the boards are connected. One wrong connection and no sound, if you can show the inside it would help greatly.

Hi, Thanks for the images I can see there is quite a bit of glue still on the boards, but I do not believe that you have a power problem mainly because you have a steady green light and your remote control also shows the power is there. I can not see all of the connectors, however I am mainly concerned with the amount of glue residue on the ribbon connectors that connect the amplifiers to the output board. See attached photo of the connector. The pins on the boards must be carefully and thoroughly cleaned as well as the connectors on the ribbon. Have you tried connecting the subwoofer speaker yet? Anyway look for a possible bad or dirty connection there and let me know what you find. Some pictures when you are finished will help.

The cable I showed you in the photo is most critical. Yes, if this cable is not connected correctly, you will not get the sound. It does not matter which end you make the connections as long as the red striped wire of the ribbon is always connected to the number one pin, which is also marked on the circuit board. Look at the circuit boards and you will see a white arrow marking on the board which shows the number one pin. The connector also has an arrow marking point to the number one pin. It is possible that one of the three connectors is incorrect and that would prevent the audio sound. Also, since the voltages delivered by these connectors are very small, some glue on the pins or inside the connectors may be preventing the sound, or that the connectors are not well seated because of glue or other interference. Also look for damage to the traces leading to pins which may have been caused by scraping off glue, they are very fine traces and should be looked at with a magnifying glass.

The sub woofer gets its power directly from the amplifiers and therefore if you apply power to the remote audio control box and the wires are properly connected to the speaker, you should get sound, however, I do not know what would happen if the connectors are not properly connected. I believe you said that the green power light on the main power supply stays on steady, when you turn on the audio control do you hear the start relay turn on?

The cable I showed you in the photo is most critical. Yes, if this cable is not connected correctly, you will not get the sound. It does not matter which end you make the connections as long as the red striped wire of the ribbon is always connected to the number one pin, which is also marked on the circuit board. Look at the circuit boards and you will see a white arrow marking on the board which shows the number one pin. The connector also has an arrow marking point to the number one pin. It is possible that one of the three connectors is incorrect and that would prevent the audio sound. Also, since the voltages delivered by these connectors are very small, some glue on the pins or inside the connectors may be preventing the sound, or that the connectors are not well seated because of glue or other interference. Also look for damage to the traces leading to pins which may have been caused by scraping off glue, they are very fine traces and should be looked at with a magnifying glass.

The sub woofer gets its power directly from the amplifiers and therefore if you apply power to the remote audio control box and the wires are properly connected to the speaker, you should get sound, however, I do not know what would happen if the connectors are not properly connected. I believe you said that the green power light on the main power supply stays on steady, when you turn on the audio control do you hear the start relay turn on?

I understand that you have all the inputs connected to your computer and you are playing sound ? And you have speaker outputs also connected ? And you have head phones connected to the audio control and you hear sound in the phones ? And when you unplug the phones from the audio control you still do not hear anything from the speakers ? Is that correct ?

OK, your power is ok and your amps are ok. Possibly speakers incorrectly connected check polarity or system is muted

Is it even remotely possible that the problem is in the control box and not at the source? Something as simple as whatever is supposed to trigger when you remove the headphones is staying engaged and thus not routing the sound back out to the speakers?

hi , please check this video . ( I replace 4 CAP on Power Supply board 470uf 250v ) I get my amp to turn on again but I want to know
its still power supply board problem or other problem this video will show u how amp works .
the headphone output of the console is working well but output channels for speakers even subwoofer is not working well
sound is very low and noisy . some channels don't have sound at all .

https://youtu.be/4tFY61IPh-w

Ricter, I'm back and have not given up, just had other issues. Will let you know what I find out