网友的相关建议:
风扇驱动三极管击穿,更换后检查大电阻大电容等。</pre>
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<h4 class="ask">追问</h4>
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<pre class="replyask-text" id="content-5247474">会不会是EM78IC坏了</pre>
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<h4 class="reply">回答</h4>
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<pre class="replyask-text" id="content-5270311">检查300v、18v、5v电压。