Lighting audio S2.300

mike49504 · 24th April 2010, 09:18 PM

Got this amp in for repair. The guy said he blew 2 subs off this amp.I checked it out and found 2 shorted outputs. I replaced the shorted outputs and moved all pots/switches around several times. But the channel that was blown still has an issue with new outputs in it the channel distorts like crazy.
I checked all op-amps and have + - 15 volts on them all other pins 0 volts.

It looks like they are using the 5 watt ceramic resistors for the emitters

Wondering what else i should check since the left channel distort's like crazy

Perry Babin · 25th April 2010, 12:28 AM

With a speaker connected, post a photo of the distorted waveform.

mike49504 · 25th April 2010, 03:20 AM

I figured it out. It was some bad solder connections

24th April 2010, 09:18 PM	#1
mike49504 diyAudio Member Join Date: Sep 2006	Lighting audio S2.300 Got this amp in for repair. The guy said he blew 2 subs off this amp.I checked it out and found 2 shorted outputs. I replaced the shorted outputs and moved all pots/switches around several times. But the channel that was blown still has an issue with new outputs in it the channel distorts like crazy. I checked all op-amps and have + - 15 volts on them all other pins 0 volts. It looks like they are using the 5 watt ceramic resistors for the emitters Wondering what else i should check since the left channel distort's like crazy

25th April 2010, 12:28 AM	#2
Perry Babin diyAudio Member Join Date: Nov 2003 Location: Louisiana	With a speaker connected, post a photo of the distorted waveform. __________________ 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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25th April 2010, 03:20 AM	#3
mike49504 diyAudio Member Join Date: Sep 2006	I figured it out. It was some bad solder connections

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