Question about Sennheiser E835 Professional Microphone
Have a Sennheiser E835 wireless mic w/ fresh batteries, but the mic won't even turn on. HELP
When a sennheiser wireless won't turn on (LCD is blank w/ fresh batteries) it is an indication that the firmware was recently flashed unsuccessfully (e.g. the mic moved out of the infrared beam that the base uses to upload the new firmware which takes quite a while to to hold onto the mic!
I have the toolkit to flash the E300-2000 series with the factory firmware (rev 1.0.2 - way bback but new enough to support the IR interface on G3 units) - from there WSM can be used to upgrade to the current firmware rev 1.4.4 / 1.6.0 (model dependant)
If your mic or belt pack looks like it's bricked (won't come on with the on button w/ fresh batts, clean contacts, etc) then chances are it got a corrupt firmware load and needs to start from factory f/w then be upgraded to your model's current firmware that matches your receiver.
Each model (except 1xx series) has uploadable f/w. With factory software used at sennheiser to burn the first f/w into the product which is proprietary to prevent counterfiet units being made in china, it is possible to restore "bricked" base stations or portable mics that got interrupted during a f/w update.
NEVER do updates over wireless links, and always have your equipment (PC, network gear, and the sennheiser base station on a UPS circuit in case the power glitches. Murphy's law states the likelyhood of a power glitch is proportional to the value of your work so flashing the firmware on a $1000 microphone really is exciting for murphy. Also having a wireless link increases the probability of things going wrong - preferably plug in both your PC and sennheiser h/w into the same UPS backed network switch/hub. Ensure all IP addresses are pingable from your pc before preceeding.
All sennheiser equipmenet can be "un-bricked" or restored to normal operation if it gets bricked during an update. While ideal to run the latest f/w for the added features, the risk needs to be mitigated with ups'es and hardwired links.
Posted on Jan 09, 2012
How long did you hold the on button for? press it longer
Posted on Mar 02, 2009
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