beomaster 1900 no 15v supply - BeoWorld Forum

Tagged: Beomaster 1900

This topic has 3 replies, 3 voices, and was last updated 1 month, 4 weeks ago by Imax5353.

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22 January 2025 at 20:48 #63005

astro
BRONZE Member

It turned out to be two faulty transistors. So now the 15v is back, hooray! But the touch buttons dont do anything, the relay doesnt click. Any ideas what can be the problem?

cheers, Göran

6 February 2025 at 19:52 #63482

Pindsen
BRONZE Member

Hi,

You need to ensure the Switch On signal is present on TR32 Basis after you have activated the touch buttons, otherwise you will not have voltage over the relay coil.

Location: Denmark

15 February 2025 at 20:16 #63819

Imax5353
BRONZE Member

For my beomaster 2400, the 15v transistor 2TR27 that connects to the IO planel on the bottom was grounded. The plastic ring that isolates it from the screw wasn’t seated properly
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