Onkyo TX-NR545 - / No power, No stand by /

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mastertech
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Onkyo TX-NR545 - / No power, No stand by / May 4, 2018 15:51:32 GMT -5

Quote

Post by mastertech on May 4, 2018 15:51:32 GMT -5

May 4, 2018 14:32:09 GMT -5 dakata said:

Voltages Q7020:
GND-GND
RESET-3.27V
VDD-3.27V

Voltage D7009:
4.88v - cathode
2.98v - anode

Ok, so you have 3.27v at reset pin but zero at pin 14. Check both sides of R7073.

mastertech Global Moderator Posts: 3,538	Onkyo TX-NR545 - / No power, No stand by / May 4, 2018 17:20:59 GMT -5 Quote Select Post Deselect Post Link to Post Member Give Gift Back to Top Post by mastertech on May 4, 2018 17:20:59 GMT -5 Well remove it and test it when out to see.
	MT

dakata Junior Member Posts: 34	Onkyo TX-NR545 - / No power, No stand by / May 4, 2018 18:30:54 GMT -5 Quote Select Post Deselect Post Link to Post Member Give Gift Back to Top Post by dakata on May 4, 2018 18:30:54 GMT -5 Now i havd voltages on both side on R7073, but nothing (no relay click, no display). I try to reset enter+power button, cbl+power button, only power button.

mastertech Global Moderator Posts: 3,538	Onkyo TX-NR545 - / No power, No stand by / May 4, 2018 18:41:57 GMT -5 Quote Select Post Deselect Post Link to Post Member Give Gift Back to Top Post by mastertech on May 4, 2018 18:41:57 GMT -5 So you now have 3.2v right on pin 14? Did you change the resistor?
	MT

dakata Junior Member Posts: 34	Onkyo TX-NR545 - / No power, No stand by / May 5, 2018 1:21:28 GMT -5 Quote Select Post Deselect Post Link to Post Member Give Gift Back to Top Post by dakata on May 5, 2018 1:21:28 GMT -5 Yes, i have 3.31v on pin 14, i replace r7073 with 1kohm, but nothing.

mastertech Global Moderator Posts: 3,538	Onkyo TX-NR545 - / No power, No stand by / May 5, 2018 8:11:53 GMT -5 Quote Select Post Deselect Post Link to Post Member Give Gift Back to Top Post by mastertech on May 5, 2018 8:11:53 GMT -5 What is your voltage at pin 121?
	MT

dakata Junior Member Posts: 34	Onkyo TX-NR545 - / No power, No stand by / May 5, 2018 8:35:01 GMT -5 Quote Select Post Deselect Post Link to Post Member Give Gift Back to Top Post by dakata on May 5, 2018 8:35:01 GMT -5 Pin121 - 3.3v

mastertech Global Moderator Posts: 3,538	Onkyo TX-NR545 - / No power, No stand by / May 5, 2018 8:49:02 GMT -5 Quote Select Post Deselect Post Link to Post Member Give Gift Back to Top Post by mastertech on May 5, 2018 8:49:02 GMT -5 Ok, check voltage at the following pins. Also see if the voltage is steady or fluctuating. 12 ___ 13 ___ 106 ___ 107 ___ 108 ___ 109 ___
	MT

dakata Junior Member Posts: 34	Onkyo TX-NR545 - / No power, No stand by / May 5, 2018 10:34:30 GMT -5 Quote Select Post Deselect Post Link to Post Member Give Gift Back to Top Post by dakata on May 5, 2018 10:34:30 GMT -5 12 ___ 1.12v 13 ___ 0.75v 106 ___ 0v 107 ___ 3.30v 108 ___ 0.47v 109 ___ 3.30v

mastertech Global Moderator Posts: 3,538	Onkyo TX-NR545 - / No power, No stand by / May 5, 2018 11:22:42 GMT -5 Quote Select Post Deselect Post Link to Post Member Give Gift Back to Top Post by mastertech on May 5, 2018 11:22:42 GMT -5 Can you value test R7044, R7046 and R7049?
	MT

dakata Junior Member Posts: 34	Onkyo TX-NR545 - / No power, No stand by / May 5, 2018 11:28:44 GMT -5 Quote Select Post Deselect Post Link to Post Member Give Gift Back to Top Post by dakata on May 5, 2018 11:28:44 GMT -5 R7044 -47ohm R7046 - 225ohm R7049 - 47ohms

mastertech Global Moderator Posts: 3,538	Onkyo TX-NR545 - / No power, No stand by / May 5, 2018 16:10:21 GMT -5 Quote Select Post Deselect Post Link to Post Member Give Gift Back to Top Post by mastertech on May 5, 2018 16:10:21 GMT -5 There does not seem to be any Eeprom activity. Can you test voltages right on the eeprom ic? Pins 1,2,3,5,6,7,8.
	MT

dakata Junior Member Posts: 34	Onkyo TX-NR545 - / No power, No stand by / May 6, 2018 3:25:32 GMT -5 Quote Select Post Deselect Post Link to Post Member Give Gift Back to Top Post by dakata on May 6, 2018 3:25:32 GMT -5 1- 3.30v 2- 1.64v 3- 3.30v 4- GND 5- 0V 6- 3.30V 7- 3.30V 8- 3.30

dakata Junior Member Posts: 34	Onkyo TX-NR545 - / No power, No stand by / May 7, 2018 3:16:51 GMT -5 Quote Select Post Deselect Post Link to Post Member Give Gift Back to Top Post by dakata on May 7, 2018 3:16:51 GMT -5 I upload my dump Attachments: onkyo nr545.rar (1.21 KB)

mastertech Global Moderator Posts: 3,538	Onkyo TX-NR545 - / No power, No stand by / May 7, 2018 12:42:12 GMT -5 Quote Select Post Deselect Post Link to Post Member Give Gift Back to Top Post by mastertech on May 7, 2018 12:42:12 GMT -5 How did you read that eeprom, installed or uninstalled?
	MT

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