PC Audio Creative GigaWorks S750 7.1 speaker repair, A short guide and info with pictures...
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 Jul 22 2014, 12:33 PM
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#1
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Newbie
2 posts Joined: Jul 2014 From: Canada 
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Great guide Lex!
Here's my board after 10 years of owning the s750. 4 bulged 470uF caps(yes all 4) still power up as normal with very looooow volume. Like not enough juice to power the amps. 
Stupid glue did a lot of damage except in the second pic. 
This post has been edited by Cookie000: Jul 22 2014, 12:35 PM |
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Jul 22 2014, 11:26 PM
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#2
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Newbie
2 posts Joined: Jul 2014 From: Canada
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QUOTE(lex @ Jul 22 2014, 06:26 AM) Did you managed to fully revive the unit? Does it still suffer from very low volume after repairs? Check those 0R resistors situated right behind those big four 470uF 200VDC capacitors, in case the low volume problem still remains...  Thanks for the reply Lex! Parts have been ordered from Digikey. Still waiting for the Fedex truck to arrive later today...  QUOTE(lex @ Jul 22 2014, 06:26 AM) Looks like quite an amount of oxidation there (by the chemicals from degraded glue) as the copper layer looks dark and/or dull, instead of being shiny. After removing all those chunks degraded glue, try cleaning those exposed spots with IPA (isopropyl alcohol) to remove any remnants of chemicals from the decaying glue... Cleaning the crusted goop is no fun    Here's my parts list: QUOTE - 4x 470uF 200V 105C, high ripple handling type (for inverter and/or ballast operation) http://www.digikey.ca/product-detail/en/EE...11613-ND/483211 - 2x 330uF 100V 105C, low impedance and/or low ESR type (for SMPS operation) http://www.digikey.ca/product-detail/en/10...1042-ND/3133969 - 5x 220uF 35V 105C, low impedance and/or low ESR type (for SMPS operation) http://www.digikey.ca/product-detail/en/UH...-1579-ND/589320 - 5x 100uF 35V 105C, low impedance and/or low ESR type (for SMPS operation) http://www.digikey.ca/product-detail/en/UP...70-1-ND/4319749 - 1x 68uF 450V 105C, high ripple handling type (for inverter and/or ballast operation) http://www.digikey.ca/product-detail/en/UC...3090-ND/4332721 - 2x 47uF 25V 105C, low impedance and/or low ESR type (for SMPS operation) http://www.digikey.ca/product-detail/en/UH...-1547-ND/589288 - 1x 0.1uF 50V 105C, high temperature type prefered (such as ceramic) as its very close to the heatsink http://www.digikey.ca/product-detail/en/AR...5096-ND/1913165 |
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