Here's a new one on me.

I modify a config I have used frequently. Client gets it and says the 7000 is making a high-pitched squeel, all of the time, except when it goes to sleep. Unit works but the noise is still there. Client is using RF, with RFX6000.

Hmmm.... we go through all of the firmware and PPENG version stuff, without any satisfaction.

Client talks to Philips. They suggest he return it to the dealer and get another. Dealer gives no satisfaction so Philips tells him to return. They do swap out and return to client. Client confirms the serial #'s are different.

Load config, still squeeling.

I remove the beeps I had programmed in for start and end of the macros. Squeel goes away! Hmmmm...

Client and I both determine we are 2.0.12.0 PPENG but client has upgraded to 3.7.7 firmware, also labeled TSU7000 2.1

Any ideas?

Thx Dave