Question about Sony TA-E9000ES Amplifier

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Power on but no led display

I noticed the protect display was on several times and now the power goes through but no display appears.

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"Power board:
The power supply is the main culprit for most of the TA-E9000ES failures. Symptoms of this are no sound and a very dim or no display. Apparently the power board has several weaknesses which have caused Sony to supply a modified version in later production units. The circuit around transistors Q108 and Q109 are prone to oscillation, which will cause one or both transistors to break down, as well as resistor R124. This resistor is originally a surface mounted device capable of 1/10 watts of heat dissipation. The modification suggested by Sony is to replace this 4.7 k ohm resistor with a 1 watt rated version. Also, to prevent further oscillations a 100 pF capacitor is added in parallell with R153. (Some suggests that also transistor Q110 is a candidate for replacement.) The US issued service bulletin from Sony suggest that this fault may occur with units having a serial number in the range 800001 - 802746.
Serial numbers 80#### are for the US/Canadian version.
Serial numbers 50#### are for the european version."

http://home.online.no/~espen-b/ta-e9000es/#faults

Posted on Sep 10, 2008

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I have a 9000 es with the same problem. R124 was in fact burnt. i will replace it with 1 watt resistor and put the 100pf cap across R153, but what type - ceramic/electrolytic etc and what voltage cap is needed. Also do we need to replace Q108, 109 and 110 if they are not bad ?

Posted on Oct 03, 2015

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2 Answers

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I have a s1500 samson amp I keep blowing speakers, what can I do to prevent this from happing again? The speakers that blown first was two 12'' yorkville 350 w impedance 8 ohm, the next speakers that blown...


Turn the volume down? Feed it cleaner source material?

http://s3.amazonaws.com/samsontech/related_docs/s1500_s2000_manual.pdf

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Shorted speaker cables: This will occur if, due to faulty wiring, the hot and

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Output impedance drops below 2 ohms: This can occur if the S1500 / S2000

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DC voltage detected at speaker output: The most likely cause of this is an

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For further assistance, contact your local Samson dealer. If purchased in the

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I've contacted ADCOM before and they sent a pdf of the electricals

http://www.adcom.com/default.aspx

also try:

www.stereomanuals.com

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1 Answer

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1 Answer

I wired one of the speakers wrongly and it activated the protection cct when I turned uo the sound. All I get when I switch on is the red protection LED. It normally goes green after 5 seconds. I noticed...


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