Korg Forums

sanalc · Joined: 09 Apr 2010 Posts: 6

Hi,
My Korg PA800 is giving a hissy noise with all instruments. Its like 'zzz...' an FM radio which is not tuned properly. I am unable to use the keyboard because of this. Anyone has any idea why this is happening ? A few more hits to isolate the issue are:

The sound appears on all instruments
The noise increases with master volume increase
Amplifier and power supply seems to be ok
The noise appears in head phone also

Can anyone have any idea which section will be causing this issue ? Mine is out of warranty and I have opened it fully and checked. I can't see any physical damage to any components like a burnt resistor or a leaky capacitor. A bit techy thing.
I cannot afford Korg service centre charges. If anyone can give a hint which card might be wrong, I can order and change that card from Korg

Any help is appreciated
Thx

korgich · Posted: Sat Apr 10, 2010 12:05 am Post subject:

Mine started to do the same thing. After hour or two of playing it makes that hissing noise on all voices ROM or RAM, even when not playing at all. I'm looking for my receive to see if i still have the waranty.

sanalc · Joined: 09 Apr 2010 Posts: 6

Thats bad, so its a manufacturing defect ? Korg should look into such issues if such problems come for more people when they sell expensive product

neverkorgagain · Posted: Sat Apr 10, 2010 5:25 pm Post subject:

it could be 2 things..... ram defect or motherboard in worst case....

hope its just RAM module, i had problem with that few months ago...

Vangelismusic · Posted: Sat Apr 10, 2010 5:25 pm Post subject:

sanalc does your pitch bend work?

charlie67 · Posted: Mon Apr 12, 2010 10:09 pm Post subject:

Have you tried the obvious things like re-loading the operating system and resources?

korgich · Posted: Mon Apr 12, 2010 11:19 pm Post subject:

My pitch bend is working fine.
And yes charlie67 i have tried the obvious things like all kinds of reloading and resets. One more thing that i noticed is, that the led on MIC button is flickering when the board is making that noise. I lowered the gain on the inputs but it didn't help.

sanalc · Joined: 09 Apr 2010 Posts: 6

Hi, sorry for late reply. I was busy with work and didn't get time to look into forums. My pitch bend works fine. I have notice only one additional problem. The front USB doesn't work. It detects stick, but doesn't read. But the rear one works fine.
I had reloaded OS to 2.01 after formatting. Still no luck. It could be something before amp. either DA converter or pre amp or anything. Or might be the TC helicon voice processor.
All the voices are working, but with the zzz noise. I couldn't use the keyboard for about 2 months. Korg service centre said they will charge £60 an hour and an inital quote fee of £30 + spare parts. I am sure the parts might be in the range of £200 +. Puretech solutions quoted £75 for service, but they are far for me, Swindon. Cimple Solutions quoted £150 for minor faults and if not they will give quote.
Since many users are having the similar issue, may be many not in the forums, Korg should look into this matter and contact us or replace the product with a non faulty. I have already told many of my friends not to buy Korg again.

wahidw · Joined: 03 Mar 2010 Posts: 30 Location: TORONTO CANADA

mine started to do the same thing. after hour or two of playing it makes that noise.
I don't know what to do?
_________________
Best Regards
Wahid
pa800 with 256mb ram

some1uk03 · Posted: Thu May 06, 2010 3:57 pm Post subject:

After you switch on the keyboard, is the sound there automatically?

OR

does it appear after you've pressed a key on the keyboard?
_________________
Korg PA2X Pro

wahidw · Joined: 03 Mar 2010 Posts: 30 Location: TORONTO CANADA

some1uk03 · Posted: Thu May 06, 2010 5:08 pm Post subject:

If its making it after some time.. I think you may be lucky.

Check out my post a while ago... Some Sounds cause Hanging/Freezing/Dont Fade

Once this happens, try pressing... SHIFT + Start/Stop and see if the sound goes away.
_________________
Korg PA2X Pro

wahidw · Joined: 03 Mar 2010 Posts: 30 Location: TORONTO CANADA

some1uk03 · Posted: Fri May 07, 2010 5:26 pm Post subject:

When that happens next time...

TRY this and see if the sound goes away.

PRESS: SHIFT + Start/Stop
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Korg PA2X Pro

wahidw · Joined: 03 Mar 2010 Posts: 30 Location: TORONTO CANADA

Thanks, I did but the noise is still there it is getting worst every day.
I think the 64mb ram or memory got damage some how , because it dose only withe USER Drums and sound.
can I buy ram and change it or not?
Any advice please.
Thanks
_________________
Best Regards
Wahid
pa800 with 256mb ram