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Frank B
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 Posted: Thu Jul 17, 2008 1:17 am Post subject: Sony HCD-NE5 doesn´t turn on |
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[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
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| Posted: Thu Jul 17, 2008 2:18 am Post subject: Re: Sony HCD-NE5 doesn´t turn on |
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| 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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| Posted: Thu Jul 17, 2008 2:26 am Post subject: Re: Sony HCD-NE5 doesn´t turn on |
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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
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| Posted: Thu Jul 17, 2008 5:15 am Post subject: Re: Sony HCD-NE5 doesn´t turn on |
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| 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
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Frank B
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| Posted: Thu Jul 17, 2008 8:58 pm Post subject: Re: Sony HCD-NE5 doesn´t turn on |
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| 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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