Hi

My AD30VT had suddenly gone silent. I tried using headphone and there is sound. Does anyone have the same prblem before? i have changed the tube of the same and it doesnt work. next i am looking for speaker change, which i dont want to repeat my mistake if it doesnt work again. Hence, i would like to know, how do we test if it is the speaker that is not working.

Thank you.

not speaker problem after testing it with battery , and not headphone jack as the sound from headphone is good,, . Just that the seaker is totally silent. I have replaced the vacumm amp tube , the sound from the headphone become less noisy and clearer but it doesnt fix the speaker sound.
Next thing i am going to try is replacing the LM3886T chip.