Hi. My receiver is completly dead. No display, no std by, no power, no relay click. Main transformer is perfect. AC relay is perfect. All power and driver transistor are normal. All fuses also normal. All chips are cold (no hot elements). Service manual: elektrotanya.com/onkyo_tx-nr545.pdf/download.html Please help:// Voltages P9011B:
Between 3pin and 4pin on Q8931 when i put DMM on diode mode, i have ''short''. When i put DMM on ohm mode, i have 30ohms. When i measure C8936 and C8937 i have ''short'' when i put DMM on diode mode, when i put on Ohm mode i have 39 ohms. On 2pin Q8931 i have 11.6v, on 3pin and 7 pin nothing.
Post by mastertech on Apr 30, 2018 15:01:34 GMT -5
I do not even know why you are messing with that ic. You did not even verify if it was bad. And the circuit was not verified bad yet either and you started removing stuff. You need to get the unit to turn on first. With the unit not being on that would be normal for that ic to not output any voltage.
If you decide you want to get back on track and do some trouble shooting rather then just poking around let me know.
On Q7016 put some solder or a wire across emitter and collector so you are jumping these 2 points. Then when you plug it in see if the main relay on the power supply board clicks on. Then see if the display comes on. If you hear the click but do not have a display test for AC voltage at connector P9002 on the power supply board.
lfcfan: Hi Todd, have been reading endlessly about the topic, and I really don't think that I'll be capable to 1. do the job myself as I don't have enough of the right equipment, and it looks like only the people who have access to TI exclusive distribution networ
Apr 9, 2020 17:17:06 GMT -5
skydronelink: Thank you I advance
Jan 29, 2020 4:01:41 GMT -5
skydronelink: Hi Repairaj, I have the same issue, but I am not able to get the cap value, I can tell it is the same board but deffirent rev cause of the side CAP is not the same value ! any idea how I can get the right burnt cap value?
Jan 29, 2020 4:01:31 GMT -5
skydronelink: Hello Jerme, thank you for the those images, is there is any chance to get the C2 (Cap) value or an image for it ? Thank you in advance.
Jan 27, 2020 23:15:06 GMT -5
skydronelink: Hello Sergio, I have the same issue, but I am not able to get the cap value, did find out what is the cap value?
Jan 26, 2020 18:01:17 GMT -5
jbmeyer13: Wolfy's Marquee isn't working? Did you spill a pint on it and short the MB?
Apr 25, 2019 8:32:28 GMT -5
wolfman: Always the same sarkasm Kurt that's why I never checked in until now. I knew you wouldn't give me a cheerful answer so let you hang for a while. Removed the last part you probably are a decent guy Eye to Eye.
Apr 19, 2019 18:55:30 GMT -5