iPod photo U2 stuck at (lighted up) Apple logo

Hi everyone 🙂

My beloved iPod classic photo got broken 😟

I've tried to fix it but no success, here is what I find out:

- I know HDD and flex ribbon are 100% working - as I transfer them to other iPod photo

- Even HDD is detected in Diagnostic Menu

- When choose Diskmode from Diagnostic Menu - iPod stuck at NOT light up Apple logo

- When normal boot - it stuck at lighted up Apple logo

- It is slow ("drawing") in Diagnostic Menu compare with other iPod photo

- It is passing all Memory tests in Diagnostic Menu

- iTunes not recognise it