I finally finished my J5Mk1 but...

Hi,

So I bought my J5Mk1 something like 10 years ago. I started build it but then came everything else.

Now I have finished building it. But when I power it on... Tubes are glowing, nothing smells bad but still there's like problem with sound. When I play my guitar there's so weak sound and when I turn pots and switches there's something happening. Its just so strange. The sound is like waving. When I hit strings harder it sounds stronger. But it is so weak sound like no sound at all.

I have measured ground and went through layout picture and schematic but I just can't find it.

I think that there not big problem but I just cant find it.

Does anyone have had the same and please help mee.

Thanks.

so again I went through everything I tried to find the problem. Nothing.

So when I play through the amp, I can play single notes but the sound is very distorted and banging and it doesn't play long. As it couldn't get the sound last and needs loads of volume. Also when I have volume on and unplug my guitar it has like whistling sound and It stays to circulate.

Hope someone will understand and have even a tiny clue what's going on.