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Sony cdx-gt250s Unit Repair
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Zebrach
New User
Jul 4, 2008, 1:54 PM
Post #1 of 5
(7471 views)
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Sony cdx-gt250s Unit Repair
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Hey guys.
Im just looking for some advice regarding a repair job I'd like to attempt. I have a Sony CDX-GT250S front loading car cd/radio set. The unit is no long under warranty and strangely stopped working after my car had been serviced.
Unfortunately the car servicing people refused to accept responsibility and have since closed down, leaving with me with a fancy door stop.
I have recently removed the unit and tested it on my bench power supply to and still no luck. I have removed the casing and taken a good diagnostic look at all the internals.
My first geuss was that it is a faulty internal power supply. The device uses a single IC (TDA8588BJ) containing the 4x50 Watt Amplifires and 5 regulators which power the devices systems (i.e cd player mechanical drives, display power and system microprocessor etc..).
Suspecting the fault to be from this chip I noticed some corrosion on the pcb the TDA8588 pins are fixed, possibly due to corrosion ingress. It could have shorted the output and input of one of the amplifiers. Inspection of voltages on these pins reveals that many of the regulator outputs are off spec, leaving (most notably) the display, cd player mechanical drive and cd player mechanical digital control systems with ought power. Im still "massaging" the device for more diagnostic clues which I may have missed.
I would like to know if anyone has any repair experience which may be relavent to this as I would like to replace this single component (it is readily available at an affordable cost). Id like to just get some additional opinions and advice before I attempt anything drastic.
Regards
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Mc Ek
Anonymous Poster
ekakuuku@yahoo.com
Oct 16, 2008, 2:24 AM
Post #2 of 5
(7158 views)
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Re: Sony cdx-gt250s Unit Repair
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Hello, am sorry am not offering a solution but instead need help too. I have the same palyer, used it for less than 3 months. water leaked to it during routine dashbaord cleaning without my notice. A technician identified that master IC TDA8588BJ/R1 Cu as the faulty one. it actualy had 3 pins coroded, and couldnt power. I have looked for that IC and cannot get it. Where can i buy it from and at what cost.
Thank you
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jupoco
Novice
Nov 25, 2008, 7:40 PM
Post #3 of 5
(7017 views)
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Re: Sony cdx-gt250s Unit Repair
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The IC TDA8588 is not hard to find, you can still find it from the distributors. or you can get the whole test PCB from someone who have the used and can still work.
Good luck
Integrated Circuit, Radio parts, Car DVD loader, CD changer....www.jupoco.com.cn
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jupoco
Novice
Nov 25, 2008, 7:45 PM
Post #4 of 5
(7014 views)
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Re: Sony cdx-gt250s Unit Repair
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it is best if you can find the whole CD mechanism, could you upload the CD mechanism here and maybe someone can help you.
we supply CD DVD mechanism too, but I am not sure whether we have the one you require in stock
please visit www.jupoco.com.cn or mail us maybe we can get the right one for you.
Regards
Integrated Circuit, Radio parts, Car DVD loader, CD changer....www.jupoco.com.cn
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jupoco
Novice
Nov 25, 2008, 8:01 PM
Post #5 of 5
(7010 views)
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Re: Sony cdx-gt250s Unit Repair
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You can find the TDA8588 on http://www.jupoco.com.cn/product_473.html
Integrated Circuit, Radio parts, Car DVD loader, CD changer....www.jupoco.com.cn
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