Akai am-u01 righthand channel sounds distorted/blown please can you tell me what components on the board to check/replace the left channels fine i have allready re-wited most of the board but cant single out right channel

As you mentioned, recording on left channel is correct but monitoring on left channel is distorted, the problem seems in the Power Amplifier section / output stage. See the block diagram given on page 29 of manual.
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If your receiver has a balance knob, check it first. Switch the receiver to a different source such as the radio or cd player. See if both channels work if headphones or earbuds are used. You’re doing process of elimination this way. Sometimes the contacts in a knob or switch will need cleaning causing a Chanel to drop out. Be sure the speakers are not at fault. If none of these ideas work, you will need more than a soldering iron.

Check the speaker/s first. If found OK; check and replace the damaged component/s at its audio output section circuit board. If needy, replace this board as card basis. If you wish to get some details; check the site linked here. Viewing it in "Mosaic" will make surf easy. Surf the site with patience. Pull up older posts. Surf the site with patience.
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The problem will be in the power amp for the the left channel. One you have identified this on the circuit board you can compare the channel with the right. As they are both the same. Start with a visual check. If anything looks odd compared with the the right replace it. Distortions are often caused by a burned resistor. Though the main power transistors or IC can cause it too. If you can't find anything visual I would replace the main output device(s) for the left channel.

If you feel it is , here's the components to check:


Check Q444 (muting transistor)

Q407

Q403 ( TC9213P), Q371

Q402

Have you checked the final transistors on that weak channel? They may look fine but may be weak. You can pull them and check them on your multimeter with the diode check and cross it with the data sheet for that transistor.

The new boards multiplex the connectors on the back panel to maximize use. Open the Realtek control panel and configure for sterio 2.1. Also, these new boards do not provide any power drive, so to get decent volume, you will need amplified speakers.

PLEASE :) wear saftey goggles, no jewelry or watches while troubleshooting a live amp. Tube amps have up to 600V dc on some points so rubber gloves will improve the saftey margin. My primary suggestion is to take it to a pro. Please be safe if you are inexperienced. I can't be liable for my fixya suggestions.

I think you meant "changed" Left speaker with Right Speaker and visa versa. Some receivers have speaker A and B selections from a switch on the front, which is why I ask. I think you tried each speaker on the bad channel to find if the speaker was blown. If the speakers are OK make sure that the speaker wiring is good too. Sometimes they can be compromised so use two short lengths of new wire for trouble shooting. Try the other functions like tape, cd, phono, aux, dvd, ect. and if there is no problem with them then it is your tuning system. Check your antenna first. Make sure you are tuned to the station with max power received. Sometimes you can lose Stereo with analog tuners or be tuned to a harmonic frequency close to the target frequency. Check all of the fuses. Sometimes slo-blo fuses can blow incompletely resulting in a high resistance that causes a voltage drop. If the problem is still there you have trouble in the RF receiving/pre-amplification circuit or blown components in the output transformer/tube/transistor circuit. This is verified by having the same problem with the other functions above. In either case, you will need to take the unit to a repair service or get a service manual and test your voltage points to determine which components are bad. Without a service manual, I would start with the Left output transistor. Check the AC and DC voltages with respect to ground (chassis or negative output/input) on the good channel at all nodes and compare them to the same ones on the bad channel. Again, start with the output circuit for the amplifier. There will be one or more transistors per channel. They will be screwed to a heat sink. Also look for brown, cracked or melted components. Keep in mind that replacing these does not necessarily fix your problem as there is usually a failure elsewhere which caused them to go bad. Work your way back to the actual input signal and you will have hopefully found the problem. Good luck, be careful, and seek some local advice from your friends or repair technician. Happy Shooting!

you need to inspect the board, most of the time you can trace the problem according to a deformed component.... bulged capacitor, burnt component (black dust on component and board) or if it's an IC crack or chipped ...

Did you ever find the solution to the left channel issue? I have the same problem with mine.