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Sony HCD-NE5 doesn´t turn on

 
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Frank B
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PostPosted: Thu Jul 17, 2008 1:17 am    Post subject: Sony HCD-NE5 doesn´t turn on Reply with quote

[b] Basically, the problem is that the led indicator is always turn on and off continously. I alreday check the Protect signal and I think it is the problem, but really I don´t know where this signal cames. I already have replaced the Audio output IC but the problem still is present.

Do you have any suggest??

BR
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vtech



Joined: 08 May 2006
Posts: 1264
Location: USA

PostPosted: Thu Jul 17, 2008 2:18 am    Post subject: Re: Sony HCD-NE5 doesn´t turn on Reply with quote

Frank B wrote:
[b] Basically, the problem is that the led indicator is always turn on and off continously. I alreday check the Protect signal and I think it is the problem, but really I don´t know where this signal cames. I already have replaced the Audio output IC but the problem still is present.

Do you have any suggest??

BR


Not familiar with the specific model but the blinking LED with Sony's compact audio systems(too many models) is almost always a power supply problem.--NOT an audio o/p IC problem. If you monitor your standby, you will notice it being erratic because of too much AC component.
You are likely to have one or several dried up electrolytics in power supply.--used to see it all the time.
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Frank B
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PostPosted: Thu Jul 17, 2008 2:26 am    Post subject: Re: Sony HCD-NE5 doesn´t turn on Reply with quote

Hi! Vtech,
Thanks for your comment about. Let me check the power supply! I have a question, Do you know which componen provided the protect signal in this audio system??

BR

Frank B
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vtech



Joined: 08 May 2006
Posts: 1264
Location: USA

PostPosted: Thu Jul 17, 2008 5:15 am    Post subject: Re: Sony HCD-NE5 doesn´t turn on Reply with quote

Frank B wrote:
Hi! Vtech,
Thanks for your comment about. Let me check the power supply! I have a question, Do you know which componen provided the protect signal in this audio system??

BR

Frank B

without the schematic can't tell you but as far as protection for DC on the outputs, it is usually monitored by one or two txistors & sent in as a signal to protection pin on the main micro. I am not sure about your specific model but, most will flash "protect" on the display if/when in protect mode.
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Justmanuals



Joined: 21 Aug 2004
Posts: 1948

PostPosted: Thu Jul 17, 2008 2:17 pm    Post subject: Reply with quote

This Parts & Service manual can now be purchased for $9.99 and downloaded immediately after payment from http://www.justmanuals.com


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Frank B
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PostPosted: Thu Jul 17, 2008 8:58 pm    Post subject: Re: Sony HCD-NE5 doesn´t turn on Reply with quote

vtech wrote:
Frank B wrote:
Hi! Vtech,
Thanks for your comment about. Let me check the power supply! I have a question, Do you know which componen provided the protect signal in this audio system??

BR

Frank B

without the schematic can't tell you but as far as protection for DC on the outputs, it is usually monitored by one or two txistors & sent in as a signal to protection pin on the main micro. I am not sure about your specific model but, most will flash "protect" on the display if/when in protect mode.


Great!! thank you very much for your comments. Now I have a good start trying to fix my Sony.

BR

Frank B
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