Can a eqalizer harmen/ karden graphic eqalizer model eq8 be used with pioneer surround receiver model vsx9700s

No they have different remote codes.

I don't see why not.

Yes you can use any system that is out there.

What model Pioneer receiver?

http://www.martinlogan.com/pdf/manuals/manual_descent_i.pdf

Absolutely! To provide a better solution to your problem, however, you will need to provide model numbers of your TV and surround sound system. Depending on the available hookups and your hardware, you may need a received to make everything compatible.

You make surround channel adjustments using the on-screen GUI interface. This can be done either by using the remote (recommended), or by using the appropriate controls on the receiver. [The GUI mode is active when the GUI button and the ring surrounding the Multi-Jog dial is glowing amber.]

there is an "update" available for this model years stereo which should fix the problem. I have seen it in cyberspace. DL and install and see if it helps

Go to the Harmen Karden web site and you should find a list of drivers for your system...download/install and reboot

This answer is generic:

The output stage most likely has damaged IC's and transistors depending on the exact design. This may also include the pre-drivers since most of these designs are 'DC coupled through the signal path.

An experienced audio service tech should be able to service this for you. Problems with blown output stages may tend to be expensive to service.

Jerry G.