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PMDG a strange sound when the battery is turned on

captMach
in PMDG 737NGX | 737NGXu

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Hi, I have problem with PMDG 737 NGX,when the battery is turned on,weird sound appears like very speed trrrrr.Does anyone know where the problem is?It hadn't happened before.Thank you in advance for your help,Petr

Check if you have the older standby instruments of the ISFD. If you are hearing it on the older instruments. Turn off and select ISFD on the options. Turn on again and if it has stopped, you've found the noise that annoys all of us who have to fly the word not allowed things!!!!

The Standby Altimeter vibrator.

Mark Harris.

Aged 54. 

P3D,  & DCS mostly. DofReality P6 platform partially customised and waiting for parts. Brunner CLS-E Yoke and Pedals. Winwing HOTAS and Cougar MFDS.

Scan 3XS Laptop i9-9900K 3.6ghz, 64GB DDR4, RTX2080.

B737NG Pilot. Ex Q400, BAe146, ATP and Flying Instructor in the dim and distant past! SEP renewed and back at the coal face flying folk on the much deserved holidays!

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