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必要な工具と部品
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この手順は未翻訳です。 翻訳を手伝う。
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Replace the fuse. Insert transformer power cable to PCB.
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Since the Amp did not turn on, check the power out on the transformer. It does show 12V DC. Reconnect it and turn the Amp face forward.
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The Amp uses a 6.3mm input and output jack. Apply a sound source to the input. Still no sound from the Amp, it is time to check a bit deeper.
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この手順は未翻訳です。 翻訳を手伝う。
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Another odd looking piece is the location of the power Amp IC.
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The smudge marks of the thermal past revealed that the board was loose and the the IC did not make contact with the heatsink
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The thread in the heatsink was partially stripped. Use a small jewelers screwdriver to wedge under the screw,while using a #2 Philips screwdriver to remove it.
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この手順は未翻訳です。 翻訳を手伝う。
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Reapply a thin coat of thermal paste to the back of the IC. Use a self tapping screw to attach it to the heatsink.
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Now is also a good time to properly mount the transformer. I used some M3x15mm machine screws.
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With those repairs made, all that is left is to reassemble the AMP. In my case, this Amp worked after replacing the TDA2030A
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14 の人々がこのガイドを完成させました。
コメント 1 件
Good Job! Very detailed, narratives good, and photos were excellent for a learning tool. Matt of Martins TV Repair.