 |
Korg Forums
A forum for Korg product users and musicians around the world.
Moderated Independently.
Owned by Irish Acts Recording Studio & hosted by KORG USA
|
| View previous topic :: View next topic |
| Author |
Message |
dolby*
Joined: 22 Jun 2016
Posts: 4
|
 Posted: Wed Jun 22, 2016 8:21 pm Post subject: Electribe EM-1 fried sot23-5 IC6 |
 |
|
Hi,first of all i want to say hello to all of the korg maniacs...
Please forgive me my english,but thats not my native language.
I've got an Korg Electribe EM-1 with fried IC6(the type/number is unreadable),can someone tell me what kind of voltage regulator is it?
Last edited by dolby* on Fri Jun 24, 2016 7:35 am; edited 1 time in total |
|
| Back to top |
|
 |
voip
Platinum Member
Joined: 27 Nov 2014
Posts: 3777
|
| Posted: Wed Jun 22, 2016 8:52 pm Post subject: |
|
|
It's a CPH6302 FET.
. |
|
| Back to top |
|
|
dolby*
Joined: 22 Jun 2016
Posts: 4
|
| Posted: Wed Jun 22, 2016 9:21 pm Post subject: |
|
|
Thank you.
Is there a more common replacement for that FET,or can i modify the power section to use an e.g 7805 ?? |
|
| Back to top |
|
|
thesigma
Senior Member
Joined: 17 Nov 2011
Posts: 409
|
| Posted: Wed Jun 22, 2016 9:30 pm Post subject: |
|
|
| dolby* wrote: | Thank you.
Is there a more common replacement for that FET,or can i modify the power section to use an e.g 7805 ?? |
Not looking at the schematic, But I'd say most likely not to replacing with a 7805, at least not without heavy modification. FET is used in a switching supply. 7805 is a linear regulator. it would not be a DROP IN replacement.
check ebay, all kind of parts from china there....
_________________
Korg gear I own:
electribes EA-1,ER-1,2x ES-1, EMX-1SD, ESX-1SD
DW 8000, Wavestation SR, KP3, Volca Beats, Keys MS 2000 R
Korg gear I've used extensively:
M1, Triton Pro-x 88, SG-1D, NanoPad, NanoKontrol |
|
| Back to top |
|
|
voip
Platinum Member
Joined: 27 Nov 2014
Posts: 3777
|
| Posted: Wed Jun 22, 2016 9:42 pm Post subject: |
|
|
A 7805 could be used, with suitable circuit modifications, provided it is mounted on an adequate heatsink. Consider also that using one would increase the load on the external power supply, because the original FET is being used as part of a switched mode regulator.
. |
|
| Back to top |
|
|
thesigma
Senior Member
Joined: 17 Nov 2011
Posts: 409
|
| Posted: Thu Jun 23, 2016 1:15 am Post subject: |
|
|
| voip wrote: | A 7805 could be used, with suitable circuit modifications, provided it is mounted on an adequate heatsink. Consider also that using one would increase the load on the external power supply, because the original FET is being used as part of a switched mode regulator.
. |
Also be sure that it's a 5v line and not a 3.3V line 
_________________
Korg gear I own:
electribes EA-1,ER-1,2x ES-1, EMX-1SD, ESX-1SD
DW 8000, Wavestation SR, KP3, Volca Beats, Keys MS 2000 R
Korg gear I've used extensively:
M1, Triton Pro-x 88, SG-1D, NanoPad, NanoKontrol |
|
| Back to top |
|
|
dolby*
Joined: 22 Jun 2016
Posts: 4
|
| Posted: Thu Jun 23, 2016 6:48 pm Post subject: |
|
|
| Can anyone send me or post an high res image of the power section of corg electribe em-1? |
|
| Back to top |
|
|
thesigma
Senior Member
Joined: 17 Nov 2011
Posts: 409
|
| Posted: Fri Jun 24, 2016 2:57 am Post subject: |
|
|
Sorry I don't own one....
But there's a service manual with schematic here
http://bmamps.com/Schematics/Korg/Korg_EM-1_Service_Manual.pdf
They're actually using a 7805 for the analog 5V, but only 100 mA, so it's not going to get too hot at that current. The digital section looks good for an Amp so if you used a 7805 it would run warm even with a heat sink, if there's room for a heat sink....and there's no airflow in there either. I'd try to find a suitable replacement felt.
_________________
Korg gear I own:
electribes EA-1,ER-1,2x ES-1, EMX-1SD, ESX-1SD
DW 8000, Wavestation SR, KP3, Volca Beats, Keys MS 2000 R
Korg gear I've used extensively:
M1, Triton Pro-x 88, SG-1D, NanoPad, NanoKontrol |
|
| Back to top |
|
|
dolby*
Joined: 22 Jun 2016
Posts: 4
|
| Posted: Fri Jun 24, 2016 7:53 am Post subject: |
|
|
...Sorry,i've made a mistake,the fried IC on my PCB is IC6 (S-8520)
The F3 look's good,but i'm almost sure that its gone for good too.
So,now i'm looking for two chips replacements
Comparing two datasheet's the CPH6302 and FDC658AP
Can i use a FDC658AP instead of CPH6302 |
|
| Back to top |
|
|
thesigma
Senior Member
Joined: 17 Nov 2011
Posts: 409
|
| Posted: Sat Jun 25, 2016 4:26 am Post subject: |
|
|
The two are pin compatible with most lay similar ratings, but not identical. I'm not skilled enough with SMPS to say wether the differences would matter. I can find the original part on eBay, why not just try that? Otherwise, I'd be willing to try the substitute, it can't be that expensive.
_________________
Korg gear I own:
electribes EA-1,ER-1,2x ES-1, EMX-1SD, ESX-1SD
DW 8000, Wavestation SR, KP3, Volca Beats, Keys MS 2000 R
Korg gear I've used extensively:
M1, Triton Pro-x 88, SG-1D, NanoPad, NanoKontrol |
|
| Back to top |
|
|
|
|
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
|
Powered by phpBB © 2001, 2005 phpBB Group
|
FAQ
Search
Memberlist
Usergroups
Register
Profile
Log in to check your private messages
Log in
