punch 800.4

timwebb · 16th October 2010, 07:14 PM

i have this old punch 800.4 and its dead the 494 has no power.what should i check?

Perry Babin · 16th October 2010, 09:34 PM

Are the solder connections on the remote terminal broken?

timwebb · 16th October 2010, 10:48 PM

ok i got the amp running but one channel doesn't play.the amp turns on and play but when i hook a speaker up to the terminals they spark and hold the speaker down.im thinking one of the outputs.

Perry Babin · 16th October 2010, 11:44 PM

Yes. Shorted outputs are the most likely suspect.

16th October 2010, 07:14 PM	#1
timwebb diyAudio Member Join Date: Jan 2010 Location: memphis tn	punch 800.4 i have this old punch 800.4 and its dead the 494 has no power.what should i check?

16th October 2010, 09:34 PM	#2
Perry Babin diyAudio Member Join Date: Nov 2003 Location: Louisiana	Are the solder connections on the remote terminal broken? __________________ Links >> Basic Car Audio Amp Repair --- Basic Car Audio Electronics --- Basic Transistor Testing --- Basic Switching Power Supply Design --- Basic Computer Skills << Links

16th October 2010, 11:44 PM	#4
Perry Babin diyAudio Member Join Date: Nov 2003 Location: Louisiana	Yes. Shorted outputs are the most likely suspect. __________________ Links >> Basic Car Audio Amp Repair --- Basic Car Audio Electronics --- Basic Transistor Testing --- Basic Switching Power Supply Design --- Basic Computer Skills << Links

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16th October 2010, 10:48 PM	#3
timwebb diyAudio Member Join Date: Jan 2010 Location: memphis tn	ok i got the amp running but one channel doesn't play.the amp turns on and play but when i hook a speaker up to the terminals they spark and hold the speaker down.im thinking one of the outputs.

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