Having a problem in turning down the volume both on the unit itself & the remote, can increase the volume both ways but have to wait 15 plus before the remote will turn down the volume. The control on the unit will not turn the volume down???

You need to determine what is overheating. For example if it uses a fan is that working? It it blocked with dust.
Operating the unit with the top cover off will quickly tell you which part is overheating. You can wait till it shuts down, then carefully, with it now unplugged, search for the hot parts. If you find only one overheating on it's own replace it.
Don't burn yourself!

Any chance the unit is in a damp area ?

The quick fix is to unscrew the cover and also remove the faceplate. There is a very small brown ribbon connecting to a slot where It is labeled in small lettering "vol + / vol -". That ribbon will disconnect the front volume touch panel. That has solved my issue. I own the Samsung Home theatre with the vacuum tubes.

If you have verified that the battery is good in the unit, try this (from the folks at Parrot). The HCU is the main control unit.
1) Turn the HCU on
2) Clear the memory on the HCU by holding down the power button and accept call button (the two large buttons on the face of the HCU)
3) Wait until you hear the HCU make the request "please pair device"
4) Hold the volume up and the volume down keys on the remote for 15 seconds
5) Release the buttons on the remote.
It might be fixed now. Press the switch on the bottom of the remote to switch to radio and see.

The cause of the problem is that the switch of your tv is dirty when cleaning it you must be familiar to the unit and the parts you will remove to prevent any damage you can use a contact cleaner, when applying a contact cleaner you must only spray it to the switch. Consult a expert technician to do it for you actual.

check the remote control, take the batteries out and try to adjust the volume on the tv set itself.
If this resolves the problem the button on the remote may be sticking, either clear it or get a universal remote.

If you still have the problem without the remote then its time to take the tv to a repair shop or claim on a warranty.

When the volume increased did the display show it doing so as if someone was turning the knob?  I mean did the volume go from like level 15 to 30 or did the unit's level stay constant while the audio volume increased?
Were you alone or sharing the room with a jokester who has a universal remote?
Does this problem occur when the batteries are removed from your remote?
Are you sure the 'volume up' button on the unit itself is disengaging properly after being pressed?

I was able to use an universal remote control that I have, a Radio Shack Kameleon 6 in one remote control which I was able to program to run the audio portion of the Kenwood KC 206 control preamp. By adjust the remote sensor volume to max, I was able to get maximum volume out of the unit and drive the power section very nicely. Now I have to get up and manually turn the manual volume control for addition volume adjustment.

Hopefully Ken can find a remote that he can control the Kenwood control preamp the same way I did. Good luck here.

Hi,
I'd love to have more information to go on, but I can give you a few things to check:
If there is a traditional volume control that is motorized, you will see the volume knob start moving on its own after you start it up. If that is the case, you'll need to have someone look at the motor control circuit. Luckily these are almost so generic that parts would be as common as replacing fuses.
If there is a volume knob that is an encoder, it may be faulty. How to tell if it is an encoder? Easy. If it will spin continuously with no extra effort, in both directions, it is an encoder. If in fact there is an encoder present underneath the knob, and the amp is responding to the remote correctly, it may be as simple as someone replacing the encoder.
If there is no volume knob at all, just a couple buttons to press, one for up, one for down, there are issues in that circuit that will need to be addressed.
If the volume control is only from the remote, and it keeps climbing on its own until you turn it down, there is a digital volume control chip that controls the volume. Unfortunately, anything in the circuit from that chip itself, all the way back to the sensor for the remote, could be faulty.
HOWEVER, do not despair yet, there may be another area to check. Turn the amp on, then IMMEDIATELY take the batteries out of the remote. If the volume stops climbing right there and then, guess what? :) Time for a new remote, or have someone take a look at the one you have if it is an expensive unit. One more related thing to check: If there are any other remotes in the room, remove them, or any other possible sources of infrared light. Alternately, take a piece of heavy black electrical tape and cover the sensor for the remote, and turn the amp on. If it behaves normally, something else in the room is "telling" the amp to increase volume. If any of these tests produce results no different from what you've experienced so far, the fault is in fact inside the amp.

Someone push the volume up button too hard and is stuck,this also has the micro(brain) confused,all this happen before you fund out your remote would not work.