RCF 310a problem with amplifer.

[Lucasdefun]

Hi i need help with rcf 310 maybe problem will be in amplifier for loudspeaker
If I switch on rcf the loudspeaker is loud but only loudspeaker the speaker for high frekvence working good.Sound like if you don't have connect ground.
No signal input.
Did you have some problem like this.
I wanna change some parts but i will be happy if you say which parts.
Thank you.

[Jazz P Bass]

Hey, good luck with that: "I wanna change some parts but i will be happy if you say which parts.:

Unfortunately it is not that easy.
The amplifier and the speaker must be checked.

If the amp is bad, you will have to check that there is not any volts dc on the output.
Also, the power rails should be checked that one or more rails are not loaded down or missing.

If the speaker is bad, the voice coil will read as an open resistance or the voice coil may be burnt & frozen that it will not move. (which may have been caused by a faulty amplifier)