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> Creative GigaWorks S750 7.1 speaker repair, A short guide and info with pictures... (PC Audio)

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MichalD
post May 8 2019, 03:02 PM

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QUOTE(djozmo @ May 8 2019, 07:49 AM)

Hi brother. Thank you so much i started my project 1.
but i have some questions....
Hello,

1. Yes, ceramic will better withstand heat produced from nearly heatsink.
2. You can't replace these with polar capacitors, you need to use bipolar capacitors only. Bipolar caps doesn't matter which polarity are connected.

This post has been edited by MichalD: May 8 2019, 03:03 PM
djozmo P
post May 9 2019, 01:02 AM

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QUOTE(MichalD @ May 8 2019, 10:02 AM)
Hello,

1. Yes, ceramic will better withstand heat produced from nearly heatsink.
2. You can't replace these with polar capacitors, you need to use bipolar capacitors only. Bipolar caps doesn't matter which polarity are connected.
*
i changed my part list ... can you check it?
http://www.digikey.com/short/pzfn8b

can i use UES1H4R7MEM?
and i broken on amfi board R44 .. What is that?
MichalD
post May 9 2019, 01:16 AM

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QUOTE(djozmo @ May 8 2019, 06:02 PM)
i changed my part list ... can you check it?...
Yes you can use this bipolar...don't have time to check whole part list now, seems OK.

What is amfi board? Amplifier board? If Ampflifier board so it ist 47B code which means 3.01 kΩ (≤1%)

This post has been edited by MichalD: May 9 2019, 01:27 AM
djozmo P
post May 9 2019, 01:32 AM

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QUOTE(MichalD @ May 8 2019, 08:16 PM)
Yes you can use this bipolar...don't have time to check whole part list now, seems OK.

What is amfi board? Amplifier board?
*
Sorry.. Yes amplifier board..
Should I change these resistances? on Pic1 ?
And thank you . on Pic3


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MichalD
post May 9 2019, 01:41 AM

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QUOTE(djozmo @ May 8 2019, 06:32 PM)
Sorry.. Yes amplifier board.....
*
Pictures you've posted are from power supply board, not an amplifier board. R44 on power supply board is 22 ohm and about 2 - 3 W. I think the resistors are functional, just scraped part of outer coating. Try measure it for resistance.
djozmo P
post May 10 2019, 04:50 AM

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QUOTE(MichalD @ May 8 2019, 08:41 PM)
Pictures you've posted are from power supply board, not an amplifier board. R44 on power supply board is 22 ohm and about 2 - 3 W. I think the resistors are functional, just scraped part of outer coating. Try measure it for resistance.
*
Sorry I have 3 messages per day and i dont have for edit message(probation account)
Thank you so much MichalD and Nautilus7
My first Gigaworks's PSU Board Finished smile.gif)
i used some silicon.


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MichalD
post May 10 2019, 05:14 AM

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QUOTE(djozmo @ May 9 2019, 09:50 PM)
Sorry I have 3 messages per day and i dont have for edit message(probation account)
Thank you so much MichalD and Nautilus7...
Great, i am glad to helped you. Nice picture with thank message rclxm9.gif

This post has been edited by MichalD: May 10 2019, 05:17 AM
nautilus7
post May 11 2019, 07:07 AM

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Yeah, you're welcome!

Well done.
djozmo P
post May 14 2019, 06:22 AM

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QUOTE(MichalD @ Feb 12 2019, 01:18 AM)
Hello, thank you. Here is the capacitor list i've used:

PSU board:

CK45-R3AD221K-NRA CAP CER 220PF 1KV RADIAL  C2 30 28 29
RDER73A471K2K1H03B CAP CER 470PF 1KV X7R RADIAL  C39 35 36 37 38
AR205F104K4R          CAP CER 0.1UF 50V X8R RADIAL  C63

LGR2D471MELZ40  CAP ALUM 470UF 20% 200V SNAP C59 60 69 70
100ZLJ330M12.5X35        CAP ALUM 330UF 20% 100V RADIAL C71 72
35ZLJ220M8X16  CAP ALUM 220UF 20% 35V RADIAL C64 73 74 75 76
50ZLJ100MT78X11.5        CAP ALUM 100UF 20% 50V RADIAL C65 78 66 67 77

450BXW68MEFR14.5X40 CAP ALUM 68UF 20% 450V T/H  C61
35ZLJ47M5X11          CAP ALUM 47UF 20% 35V RADIAL C68 62

DE1B3KX471KA4BP01F CAP CER 470PF 300VAC RADIAL  C7

CC45SL3FD470JYNNA        CAP CER 47PF 3KV SL RADIAL  C3
C317C101K2R5TA  CAP CER 100PF 200V X7R RADIAL C9 46 45 44 43 42 41 40

RDER73A332K2K1H03B CAP CER 3300PF 1KV X7R RADIAL C6
RDER72J103K2M1H03A CAP CER 10000PF 630V X7R RADIAL C20 19 17 18 
RDER72A104K1K1H03B CAP CER 0.1UF 100V X7R RADIAL C11 53 12 13 52 10 48 49 50 79
RDER73A472K2K1H03B CAP CER 4700PF 1KV X7R RADIAL C8
       
Amplifier boards:

UHW2A102MHD          CAP ALUM 1000UF 20% 100V RADIAL  C39
FK22X7R2A105K  CAP CER 1UF 100V X7R RADIAL          C40
RFS-50V2R2ME3#5  CAP ALUM 2.2UF 20% 50V RADIAL  C86 89 85 88 84 87 91 81
RFS-50V220MH3#5  CAP ALUM 22UF 20% 50V RADIAL  C211 79 83 78 82 77 90
UES1H4R7MEM          CAP ALUM 4.7UF 20% 50V RADIAL  C28 69 22 37 27 68 21 36 26 67 20 35 80

Audio processing board:

RFS-16V470MG3#5  CAP ALUM 47UF 20% 16V RADIAL  APB C208       
RFS-16V100ME3#5  CAP ALUM 10UF 20% 16V RADIAL  APB all 10uF
RFS-16V101MH3#5  CAP ALUM 100UF 20% 16V RADIAL  APB C220 218 202 201 221 219       
UES1H4R7MEM          CAP ALUM 4.7UF 20% 50V RADIAL  APB C54 52 58 56 39 40 16 18 17 15

Relay clicking issue fix:

FG20X7R1H106KRT06 CAP CER 10UF 50V X7R RADIAL  added another C63
FK26X7R2A104K  CAP CER 0.1UF 100V X7R RADIAL added between TOP243Y's C and S PIN
FK26X7R2A105K  CAP CER 1UF 100V X7R RADIAL  added between TOP243Y's C and S PIN
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sorry i didnt find RFS-50V220MH3#5 CAP ALUM 22UF 20% 50V RADIAL C211
c211 ??? where ,is it ?
MichalD
post May 14 2019, 01:32 PM

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QUOTE(djozmo @ May 13 2019, 11:22 PM)
sorry i didnt find RFS-50V220MH3#5  CAP ALUM 22UF 20% 50V RADIAL  C211
c211 ??? where ,is it ?
*
Audio processing board, here:

Attached Image
djozmo P
post May 14 2019, 11:29 PM

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QUOTE(MichalD @ May 14 2019, 08:32 AM)
Audio processing board, here:

Attached Image
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oW ok.. but c211 on your ampli board in your component list?

QUOTE(MichalD @ Feb 12 2019, 01:18 AM)
Amplifier boards:

UHW2A102MHD          CAP ALUM 1000UF 20% 100V RADIAL  C39
FK22X7R2A105K  CAP CER 1UF 100V X7R RADIAL          C40
RFS-50V2R2ME3#5  CAP ALUM 2.2UF 20% 50V RADIAL  C86 89 85 88 84 87 91 81
RFS-50V220MH3#5  CAP ALUM 22UF 20% 50V RADIAL  C211 79 83 78 82 77 90
UES1H4R7MEM          CAP ALUM 4.7UF 20% 50V RADIAL  C28 69 22 37 27 68 21 36 26 67 20 35 80
I installed 10uf on c211 on the sound processing board smile.gif
well I did not run the devices.
I'm glad I didn't start the device.
Two gigaworks repairs are over.
I must change C211 on audio processing board 10uf to 22uf.




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djozmo P
post May 14 2019, 11:44 PM

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QUOTE(nautilus7 @ Apr 10 2019, 04:06 AM)
Hi, mouser, digikey, etc send each part in separate plastic bag with a sticker/label with exact product specs and code numbers. Don't worry about this.

MichalD's electrolytics are low ESR. I don't know what digikey says, but you can also check the product specs (pdf) that comes directly from the manufacturer.

Replacing caps with bigger capacity ones isn't necessarily good or bad. It depends on the purpose of the capacitor.

For example the mains input caps (470uF 200V) can be replaced with bigger ones and basically all electrolytics can be replaced with bigger ones, if I remember correctly, since their purpose is to act as current "banks". Bigger ones can provide more current, or more correctly "current with less ripple". If this will actually make any difference, I don't really know. Also you have to consider the size, because bigger caps may not fit. Also, if you replace existinf caps with much higher capacity ones, maybe you have problems with the RC time constant.

In other caps like some high voltage ceramic ones, their value is carefully selected in relation to a resistance to form a snubber network to filter the higt voltage spikes created by the transformers. So you shouldn't change the value of these.

Also, every low voltage ceramic cap is connected in parallel with one electrolytic. This is a trick to have low ESR value, without using high quality low ESR caps. So theese ceramics don't need to be quality/expensive ones, but anyway.

My mouser parts list:
CODE

1x 450V   68uF -- https://eu.mouser.com/ProductDetail/647-UCY2W680MHD
4x 200V  470uF -- https://eu.mouser.com/ProductDetail/647-LGX2D471MELZ35
2x 100V 1000uF -- https://eu.mouser.com/ProductDetail/647-UHW2A102MHD
2x 100V  390uF -- https://eu.mouser.com/ProductDetail/647-UHW2A391MHD

5x 35V 220uF -- https://eu.mouser.com/ProductDetail/Panasonic/EEU-FR1V221
5x 35V 100uF -- https://eu.mouser.com/ProductDetail/Panasonic/EEU-FR1V101B
2x 25V  47uF -- https://eu.mouser.com/ProductDetail/Panasonic/EEU-FR1E470B

12x 100V 0.1uF  -- https://eu.mouser.com/ProductDetail/581-AR211C104K4R
9x  100V 100pF  -- https://eu.mouser.com/ProductDetail/581-AR211A101K4R
4x  500V 0.01uF -- https://eu.mouser.com/ProductDetail/581-SR217C103KAR
4x  100V 1uF    -- https://eu.mouser.com/ProductDetail/810-FA26X7R2A10500

1x 1kV   47pF -- https://eu.mouser.com/ProductDetail/810-CC45SL3AD470JYNA
5x 1kV  470pF -- https://eu.mouser.com/ProductDetail/810-CK45-R3AD471K-NA
4x 1kV  220pF -- https://eu.mouser.com/ProductDetail/810-CK45-R3AD221K-NA
1x 1kV 3300pF -- https://eu.mouser.com/ProductDetail/810-CK45-B3AD332NNA
1x 1kV 4700pF -- https://eu.mouser.com/ProductDetail/810-CK45-B3AD472KYGA

4x 450VDC 0.1uF -- https://eu.mouser.com/ProductDetail/667-ECW-FD2W104JQ

1x 250Vac 470pF -- https://eu.mouser.com/ProductDetail/81-DE1B3RA471KA4BN1F
1x Optocoupler -- https://eu.mouser.com/ProductDetail/512-FOD817A



Also for the audio boards and for the control pod:

CODE

 2x 50volts   1uF -- https://eu.mouser.com/ProductDetail/647-UES1H010MDM
35x 50volts 4.7uF -- https://eu.mouser.com/ProductDetail/647-UES1H4R7MEM
13x 50volts  22uF -- https://eu.mouser.com/ProductDetail/647-UFG1H220MEM
16x 50volts 2.2uF -- https://eu.mouser.com/ProductDetail/647-UFG1H2R2MDM
10x 25volts 100uF -- https://eu.mouser.com/ProductDetail/647-UFG1E101MPM
23x 50volts  10uF -- https://eu.mouser.com/ProductDetail/647-UFG1H100MDM
 5x 25volts  47uF -- https://eu.mouser.com/ProductDetail/647-UFG1E470MEM

In some cases (in ceramic and audio caps) I ordered more than what is needed in case something goes wrong when soldering, etc.
Also for audio caps I used higher voltage caps, as long as I didn't have any problems with space/size.

I hope I didn't forget anything...
*
Sorry my part list mix you and MichalD...
i didnt find its place
2x 50volts 1uF -- https://eu.mouser.com/ProductDetail/647-UES1H010MDM
Where do I attach it? Witch panel ? Can you help me ?
MichalD
post May 15 2019, 03:23 AM

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QUOTE(djozmo @ May 14 2019, 04:29 PM)
[b]oW ok.. but c211 on your ampli board in your component list?...
*
Yep, sorry my bad, 22uF 50V is used in both, audio procesing board and amp. boards and i accidentally put C211 to amp. board part list.

nautilus7
post May 15 2019, 08:32 AM

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@djozmo, I can't remember 100%.

These are bipolar caps. If you can't find any 1uF bipolar in the audio processing boards or in the audio amplifier boards, then it should be in the control pod. I remember it also has a couple bipolar caps.

This post has been edited by nautilus7: May 15 2019, 08:34 AM
djozmo P
post May 15 2019, 09:18 AM

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QUOTE(nautilus7 @ May 15 2019, 03:32 AM)
@djozmo, I can't remember 100%.

These are bipolar caps. If you can't find any 1uF bipolar in the audio processing boards or in the audio amplifier boards, then it should be in the control pod. I remember it also has a couple bipolar caps.
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Yes i find.. its on control pod. but i dont change its.
thank you..

QUOTE(MichalD @ May 14 2019, 10:23 PM)
Yep, sorry my bad, 22uF 50V is used in both, audio procesing board and amp. boards and i accidentally put C211 to amp. board part list.
*
Ow ok. You sould edit your partlist for another people..
Thank you so much.. i will try now.. smile.gif first start new S750 smile.gif)
MichalD
post May 15 2019, 02:58 PM

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QUOTE(djozmo @ May 15 2019, 02:18 AM)
Ow ok. You sould edit your partlist for another people..
*
Yep, i edited it already in my first partlist post.

This post has been edited by MichalD: May 15 2019, 02:59 PM
khjh1976
post Jun 30 2019, 02:20 PM

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Hi, my gigawork s750 can’t power on, can I check where can I send for repair?
MichalD
post Jul 1 2019, 04:54 AM

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QUOTE(khjh1976 @ Jun 30 2019, 07:20 AM)
Hi, my gigawork s750 can’t power on, can I check where can I send for repair?
*
Hello, there is no official repair shop for S750, you must repair it on your own or try ask in some repair shops near your location.
khjh1976
post Jul 1 2019, 08:34 AM

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QUOTE(MichalD @ Jul 1 2019, 04:54 AM)
Hello, there is no official repair shop for S750, you must repair it on your own or try ask in some repair shops near your location.
*
Thanks bro 👌 I go repair shop nearby my location.

This post has been edited by khjh1976: Jul 1 2019, 08:34 AM
Underwest P
post Jul 27 2019, 06:29 PM

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Всем привет, имеется в наличии система creative gigaworks s750
Вообщем дело такое, перестал включаться звук, на сабе мерцает еле-еле индикатор, подскажите какие нужно выполнить процедуры для оживления?

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