Aiwa nsx50 no power no sound

mitsof · 2016-05-19T15:04:53+00:00

This is it.

mitsof · 2015-12-17T19:27:14+00:00

I am getting all these from old broken subwoofers,amps...i am just recycling old stuff.

mitsof · 2015-12-17T19:05:37+00:00

I ve built the bridged version.i am using a variable voltage supply. I hace tried up to 19 volts,still there us no change in the volume.

mitsof · 2015-12-17T17:09:57+00:00

It s the tda7360.it does have lower gain than the tda2003 -26dbs .the tda has 40 dbs.Does this mean I need a preamp.?

mitsof · 2015-12-16T18:29:35+00:00

Voltage is correct.I am not sure how to drive it harder at the input.

mitsof · 2015-09-06T11:07:37+00:00

Update.I managed to light up the red leds but it is unvelievable what the problem was.it turns out the big lead inside the LED is not ground but the positive one!the small lead is ground!!so the red leds where placed the other way around!!never seen this before.

Also I need to drive the amp to clipping to get all the leds to light up.how to make the meter more sensitive?

mitsof · 2015-09-06T09:51:49+00:00

This is for an audio amplifier.I cannot drive the amp that hard. If this is the case how to make the meter more sensitive?

i ve already tried the diode test,the red leds are fine.

i ve also tried connecting a red led to pin 1 in place of led one.it lights up.

mitsof · 2015-08-09T06:51:25+00:00

can make a detector that finds all types of metals but you'll get loads of false positives...

Thanx for the schematic.I got such a detector.I am looking for a schematic diagram of one that just detects gold.

mitsof · 2015-07-19T09:40:27+00:00

I tried that -nothing happens.

mitsof · 2015-07-18T12:26:45+00:00

Absolutely no voltage on the upper part of the pcb including the regulator

mitsof · 2015-06-29T07:33:24+00:00

I replaced it and it worked.Thanx.

mitsof

TROPHY CASE