ADS PQ20

mike49504 · 14th April 2011, 05:04 PM

I got this amp in for repair. I fixed a broken trace on the output board.

Now when i power the amp up it will work then i shut it off and power it up again and it wont power up then i wait for a few hours power it up and it plays again then shut it off power it back up and it doesnt power up.

Any ideas?

Perry Babin · 14th April 2011, 08:10 PM

Post the DC voltage on the UPC1237 when it won't power up. Double-check them or leave your probe on the pin for a few seconds until you get a stable reading. Try powering it up immediately after measuring the voltage to see if probing the pins made a difference.

upc1237
Pin 1:
Pin 2:
Pin 3:
Pin 4:
Pin 5:
Pin 6:
Pin 7:
Pin 8:

Pano · 19th April 2011, 03:47 AM

Do NOT bring fights from other forums here. Messages deleted, thread closed.

14th April 2011, 05:04 PM	#1
mike49504 diyAudio Member Join Date: Sep 2006	ADS PQ20 I got this amp in for repair. I fixed a broken trace on the output board. Now when i power the amp up it will work then i shut it off and power it up again and it wont power up then i wait for a few hours power it up and it plays again then shut it off power it back up and it doesnt power up. Any ideas?

14th April 2011, 08:10 PM	#2
Perry Babin diyAudio Member Join Date: Nov 2003 Location: Louisiana	Post the DC voltage on the UPC1237 when it won't power up. Double-check them or leave your probe on the pin for a few seconds until you get a stable reading. Try powering it up immediately after measuring the voltage to see if probing the pins made a difference. upc1237 Pin 1: Pin 2: Pin 3: Pin 4: Pin 5: Pin 6: Pin 7: Pin 8: __________________ 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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19th April 2011, 03:47 AM	#3
Pano diyAudio Moderator Join Date: Oct 2004 Location: North Carolina Blog Entries: 4	Do NOT bring fights from other forums here. Messages deleted, thread closed.

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