國產合併AMP改機求救

手痕將部國產石amp2隻交連電容由4.7u 50v (non-polar)換造10u 400v (MKP), 之後完全冇聲。
請問是否u 數過大？ (底板上是寫住10u 100v)

Hi KK,

Thank you for your guidance.
I have found one solder pad did fell off from the PCB.
How can I fix this?

Besides, I am using the Goot solder gun (30/60w switchable), I use 60w most of the time.


Stephen

I have checked all contact points and fixed the loosen ones but still there is no sound. Will bring it to audio shop nearby to fix it.

Since I have free time lately, will try to fix it by myself.
KK told me may be the 2nd stage amp is dead.
Does any body knows are they the 3-leg transistors or the large one binded to heatsinks?

Do I need to wear anti-static waistband to do the soldering this time?

Thanks in advance.