Directed 1100 D - Page 2

mike49504 · 11th January 2011, 04:47 PM

7812

Leg1:31.04
Leg3:12.00

7912

Leg2:-35.43

Leg3:-12.14

Are theese suppose to be 15 volt regulators or 12 volt The 12 volt regulators were in it when i got it in.

Perry Babin · 11th January 2011, 05:14 PM

I'm sorry. The regs should be 12v. ±15v is generic and I didn't bother to look it up for this amp.

The voltage, however, should be greater than -6v and -4. There may be some 22 ohm resistors between the regs and pins 1 and 6. Make sure they're within tolerance.

mike49504 · 11th January 2011, 05:24 PM

THERE is 2 inductors in line with pins 1 and 6 L55 And L56

Diode check

L56:OL

L55:0.005

Ohms

L56: meter acts like its charging a cap.

L55:8.2 ohms

Perry Babin · 11th January 2011, 05:26 PM

It appears that one is open.

11th January 2011, 05:14 PM	#12
Perry Babin diyAudio Member Join Date: Nov 2003 Location: Louisiana	I'm sorry. The regs should be 12v. ±15v is generic and I didn't bother to look it up for this amp. The voltage, however, should be greater than -6v and -4. There may be some 22 ohm resistors between the regs and pins 1 and 6. Make sure they're within tolerance. __________________ Links >> Basic Car Audio Amp Repair * Basic Car Audio Electronics * New Site * Basic Switching Power Supply Design * Basic Computer Skills << Links

11th January 2011, 05:26 PM	#14
Perry Babin diyAudio Member Join Date: Nov 2003 Location: Louisiana	It appears that one is open. __________________ Links >> Basic Car Audio Amp Repair * Basic Car Audio Electronics * New Site * Basic Switching Power Supply Design * Basic Computer Skills << Links

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11th January 2011, 04:47 PM	#11
mike49504 diyAudio Member Join Date: Sep 2006	7812 Leg1:31.04 Leg3:12.00 7912 Leg2:-35.43 Leg3:-12.14 Are theese suppose to be 15 volt regulators or 12 volt The 12 volt regulators were in it when i got it in.

11th January 2011, 05:24 PM	#13
mike49504 diyAudio Member Join Date: Sep 2006	THERE is 2 inductors in line with pins 1 and 6 L55 And L56 Diode check L56:OL L55:0.005 Ohms L56: meter acts like its charging a cap. L55:8.2 ohms