Ronald-362069 Posted October 20, 2023 Share Posted October 20, 2023 Class 37 sound file error do I need to return the chip back to Hornby or is there a way around this? Ron Link to comment Share on other sites More sharing options...
SteveM6 Posted October 20, 2023 Share Posted October 20, 2023 Power cycle the loco, power supply and the tablet/phone and then reload the profile. If that doesn’t fix it, work through the troubleshooting guides on the forum. Link to comment Share on other sites More sharing options...
LTSR_NSE Posted October 20, 2023 Share Posted October 20, 2023 The Troubleshooting guide suggested is available here:https://uk.hornby.com/hm7000/hm-dcc-guides Link to comment Share on other sites More sharing options...
Somerset Modeller Posted October 23, 2023 Share Posted October 23, 2023 What device are you using to communicate with HM7000, Android or Iphone? Link to comment Share on other sites More sharing options...
George-370974 Posted October 28, 2023 Share Posted October 28, 2023 Look at CV29. Bit 1 should be set. If it isn't you get no sound. Link to comment Share on other sites More sharing options...
96RAF Posted October 28, 2023 Share Posted October 28, 2023 Look at CV29. Bit 1 should be set. If it isn't you get no sound. I thought bit 1 was directional headlight activation logic. Link to comment Share on other sites More sharing options...
George-370974 Posted October 28, 2023 Share Posted October 28, 2023 Sorry, I got mixed up between sound and lighting.Sound is controlled by CV158 to CV180.In case these are corrupted, you can set them all back to the default settings bywriting 5 to CV8. Writing '5' only affects the sound settings, writing '8' resets everything. Link to comment Share on other sites More sharing options...
ColinB Posted October 28, 2023 Share Posted October 28, 2023 Thank you for the info George, mind has also lost sound. Interestingly initially it registered on the app but no control. Reloaded the app and profile now works on Bluetooth and DCC but no sound. CV 29 was set at 2 changed it to 3, but still no sound so I imagine in my case a hardware fault. I forgot, checked it both on the loco and tester so it is not the speaker unless it is blowing them up but they still measure 8 ohms so I doubt it is. Link to comment Share on other sites More sharing options...
Brew Man Posted October 29, 2023 Share Posted October 29, 2023 Just to echo another current thread, CV29 has nothing to do with sound. Bit 0 = direction reverse, bit 1 = 28/128 speed steps, bit 2 enables DC operation etc. Nothing affects sound. Link to comment Share on other sites More sharing options...
ColinB Posted October 29, 2023 Share Posted October 29, 2023 I know George had updated the post to say he had made a mistake. Bit 0 is the direction bit as highlighted in the app. Link to comment Share on other sites More sharing options...
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