Author Topic: [Solved] PreenFM2 SMD (rev6 board) - no sound  (Read 2261 times)

autodafe

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[Solved] PreenFM2 SMD (rev6 board) - no sound
« on: October 29, 2020, 08:43:30 PM »
hi, I just finshed assembling my new SMD PreenFm2 (rev6 board)
Everything seems to work
-I soldered encoders, jacks, buttons and so on
-I flashed the Firmware at 1st time
-There's MIDI acitivty using USB (I can see numers 1234 on screen)
-I load some DXt sounds from the USB stick

but I have no output.
Volume is turned on
Am I missing something really basic maybe?
what shoud I check ?
Most of components were presoldered on this board..

« Last Edit: October 30, 2020, 07:40:03 AM by Xavier »

Xavier

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Re: PreenFM2 SMD (rev6 board) - no sound
« Reply #1 on: October 29, 2020, 10:40:57 PM »

You can try to hold INST and press buttons on the LEFT to play sound without midi input.

Check volume in the Eng> filter page.
Check number of voices is > 0 for the instrument you play.

Do you use a DAW ? or a midi keyboard direclty ?

Can you post a good quality picture of the back of you PCB to see if something obvious is visible.

Thanks,

Xavier

autodafe

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Re: PreenFM2 SMD (rev6 board) - no sound
« Reply #2 on: October 29, 2020, 10:48:43 PM »
thanks Xavier, I think I solved it.
In the "Flash Bootloader" instructions (https://github.com/Ixox/preenfm2/tree/master/flash) there's a link to the pfm2_flash.dfu, which is probably still an old version of the firmware,
I solved it by downloading the latest v. 2.2.20  and now I get sounds out of it...

Xavier

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Re: PreenFM2 SMD (rev6 board) - no sound
« Reply #3 on: October 30, 2020, 07:39:40 AM »
thanks Xavier, I think I solved it.
In the "Flash Bootloader" instructions (https://github.com/Ixox/preenfm2/tree/master/flash) there's a link to the pfm2_flash.dfu, which is probably still an old version of the firmware,
I solved it by downloading the latest v. 2.2.20  and now I get sounds out of it...

good news  :D
Thanks for the update

bloke_zero

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Re: [Solved] PreenFM2 SMD (rev6 board) - no sound
« Reply #4 on: June 02, 2022, 05:43:33 PM »
I had the exact same issues. No sound, everything else good.

Bootloader at 1.13 was tricky to find but is here: https://drive.google.com/file/d/1V78jCXjTNEwF5PGBnbxMuNlm4vQqXFGk/view

Also with the latest firmware. I'm on a mac but used the chrome plugin here:

https://devanlai.github.io/webdfu/dfu-util/

Following the WebDFU instructions here: https://github.com/Ixox/preenfm2/tree/master/flash

Making sure to update the Dfuse Start address to 0x8040000 for the firmware after having updated the bootloader. All good now!