blofeld sound muted after a few minutes of use

Anything about hardware musical instruments.
KVRist
210 posts since 27 Mar, 2005

Post Sat Jul 31, 2021 12:28 am

hi, I have a problem with a desktop blofeld. After a few minutes of use, the sound suddenly disappears. Everything seems to work fine, except that there is no sound anymore ! I have to restart the blofeld to get sound again, and then after a few minutes it goes away again. This is very annoying, can you help me please ? (I have the latest firmware installed : 1.25)

lfm
KVRAF
5750 posts since 22 Jan, 2005 from Sweden

Post Sat Jul 31, 2021 7:47 pm

At full use all the time?

No auto power off setting or something?
- if there is a bug try turn that off completely

KVRist

Topic Starter

210 posts since 27 Mar, 2005

Post Sun Aug 01, 2021 12:19 am

No, it's definately not an auto power off setting. About 3 minutes after turning on the blofeld, the sound goes off although everything else seems to work normally, I can navigate in the menus, tweak the parameters, browse patches, etc (and midi messages are received because the midi led is blinking)

KVRAF
1987 posts since 13 Jun, 2004 from Back in the UK

Post Sun Aug 01, 2021 12:32 am

Do you get audio through headphones?

Also this may be worth a look.

https://talksynths.wordpress.com/2012/1 ... ut-repair/
Some of my music Soundcloud Goseba

KVRist

Topic Starter

210 posts since 27 Mar, 2005

Post Sun Aug 01, 2021 4:57 am

No audio through headphones. Thanks for the link, that's interesting. The instructions don't seem too difficult, so maybe I'll try it

User avatar
KVRAF
13101 posts since 8 Mar, 2005 from Utrecht, Holland

Post Sun Aug 01, 2021 6:05 am

abducted wrote:
Sun Aug 01, 2021 4:57 am
No audio through headphones. Thanks for the link, that's interesting. The instructions don't seem too difficult, so maybe I'll try it
Did you click further? Because talksynths.wordpress.com just describes to replace a surface-mounted resistor, but not which. The link within the article that supposedly does state which resistor states that the synthtalk.com domain is for sale. Bummer...
We are the KVR collective. Resistance is futile. You will be assimilated. Image
My MusicCalc is back online!!

KVRist

Topic Starter

210 posts since 27 Mar, 2005

Post Sun Aug 01, 2021 7:57 am

yeah the webpage is dead, so it's going to be tricky to find the right resistor... and I don't even know if it would fix the problem, so I don't know what to do.

lfm
KVRAF
5750 posts since 22 Jan, 2005 from Sweden

Post Sun Aug 01, 2021 10:29 am

Did you talk to Waldorf?
- horses mouth

KVRAF
3649 posts since 13 Jul, 2004 from Earth

Post Sun Aug 01, 2021 1:01 pm

abducted wrote:
Sun Aug 01, 2021 7:57 am
yeah the webpage is dead, so it's going to be tricky to find the right resistor... and I don't even know if it would fix the problem, so I don't know what to do.
https://web.archive.org/web/20130122233 ... nd-repair/

KVRist

Topic Starter

210 posts since 27 Mar, 2005

Post Mon Aug 02, 2021 12:13 am

Thanks for the archived page, this could useful, hopefully ! I haven't contacted Waldorf, because the blofeld is not under warranty and I don't want to pay for a repair...

KVRAF
3649 posts since 13 Jul, 2004 from Earth

Post Mon Aug 02, 2021 4:17 am

abducted wrote:
Mon Aug 02, 2021 12:13 am
Thanks for the archived page, this could useful, hopefully ! I haven't contacted Waldorf, because the blofeld is not under warranty and I don't want to pay for a repair...
Happy to help :tu:
Hope you get it fixed soon.

KVRist

Topic Starter

210 posts since 27 Mar, 2005

Post Mon Aug 02, 2021 5:54 am

Well, I actually sent a message to waldorf this morning and they just replied. They say the problem must be a "broken amplifier unit" and that it would cost about 50 euros to fix it. The archived webpage gives instructions for replacing an "smd fusible resistor", which is different than the amplifier unit mentioned by waldorf, I guess ? Any one here knows how to replace the amplifier unit please?

KVRAF
29505 posts since 11 Apr, 2010 from Germany

Post Mon Aug 02, 2021 5:58 am

Shouldn't the sound be completely gone then? Unless you're so unfortunate, that you get a loose contact every time after a few minutes...
Plugins and a DAW. On an operating system. Which runs on a computer.

KVRist

Topic Starter

210 posts since 27 Mar, 2005

Post Mon Aug 02, 2021 6:04 am

yes, it's very strange that every time that I switch on the blofeld everything works fine and the sound is OK. It's only after a few minutes that the sound goes away (and everything else still works fine)

KVRAF
29505 posts since 11 Apr, 2010 from Germany

Post Mon Aug 02, 2021 6:07 am

Sounds more like a software issue to me, TBH.
Plugins and a DAW. On an operating system. Which runs on a computer.

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