General overhaul of the power amplifier, novices learning getting started |
| Time£º2015-05-26 08:29:04 Source£ºNetwork Author£ºUnknown Clicks£º1465 |
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pdnservice manual download site
pdnservice manual download site
Sound and audio signals can be input to listen to. 9, if the boot didn't open the volume, do not burn power FETs, and turn up the volume or slightly open the volume after burned tubes. There could be problems power amplifier tube quality, met the pipe! Or circuit is still not completed. You can see if the amp is serious fever. Sometimes come across fake pipes, computer work, it is going bad and will damage the drive tube. Used A940, C2073 can also drive small speakers, it will burn. As long as the circuit, with a small tube (medium power) can hear the sound very good. Category a biasing circuit is bad test machine. In the quiescent current did not turn up before, you can still try. Of 10, volume potential bad will damage the power tubes. Main performance: sound--volume gradient, burned power tubes. 11, amplifier front panel circuit repairs. Front trim is much safer! Segmentation of features are: where not damaged should not be damaged. By: disconnect between pre-amplifier line, amplifier signal input still shorted to ground to prevent accidents. Then pick from the predecessor to the amplifier a 1UF capacitor, and Lotus Connections a socket, connect the signal cable. For security reasons, audition amplifier available general recorder change, after the level of the power amplifier. Abilities, you can do it yourself repair a multi-purpose amplifier. So have no fear of burning the original amplifier tubes and speaker boxes. 12And low power amplifier without the speaker protection circuit, the simplest way is to trumpet one large-capacity electrolytic capacitors. So there would be no DC flowing through loudspeakers, there is no DC over the loudspeaker, is not easy to burn on loudspeaker. Reset circuit before repairs, as long as the front-signal output no AC hum and distortion on the line. Of course: connecting cable to shielded cable!pdnservice manual download site
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