I have picked up this receiver, which looks like it is brand new, with box and all the accessories, for $40. Usually, when there is a bad channel, it is easy to find, because there are shorted final transistors. On this one, they are all good. It does the amp diagnosis and shows Check SP Wires, at the end. Sometimes, it turns on normally without entering in this test and then it shuts down in like 30 seconds, or so. Other times, there is no display at all, because as soon as it turns on, instantly shuts off. I have tested all the semiconductors, at the amp and preamp section at all channels, and did not find anything bad. Maybe, there is a bad resistor, or capacitor somewhere?! I would need some ideas, on how to narrow it down to the bad channel. Also tested idle current, at each channel and I did not notice anything out of ordinary. Any help would be appreciated.
It is hard to find a sm for this model. It is in TX-RZ610. Do you refer to the two diodes(D7002/D7003) at the MCU? I'm measuring 0.24V, respectively 0.13V. To me, it seems like when the speaker relay turns on, then when the unit shuts down. After the amp diagnostic,it stays on, because the relay is not turned on.
In the service manual it shows that, if it comes up with Check SP Wire, that means that it is all good. But next time, if I reboot it, after a few seconds it will shut off. Than next time when I turn it on, it will check again the amps, that means that something caused it to do the test, right?
I would test right at the + speaker terminal for short to ground. I once had a new in box unit that had a factory assembly error where a speaker output metal strip was touching the chassis inside where it was hard to see.
I thought, that I should test for positive DC, at the speaker terminal. I did not see anything wrong there, except a few millivolt max. I have measured, at MCU pin #38(thermal) 3.28V. I haven't checked yet, what that means.
No short. For a few minutes I thought that is all good, I have listened to some Tune in music, I have even upgraded the firmware. At the next reboot, it went blank display again, just a click on and off. I have managed to get to the description screen, and it was showing Protection: I.
This is weird. Yesterday, I have listened to music for a few hours and it worked flawlessly. Today, I turn it on and it shuts down instantly. Than it makes an amp diagnosis, and it comes up with Check Speaker Wire result, which if I'm not mistaken, on this model that means that everything is OK. After that, I turn it on again, and it runs very well again.
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
jaws55: want to make sure of value.
Apr 16, 2019 16:46:43 GMT -5
jaws55: Working on Pioneer VSX822K, need help finding value of ZD403, think its a 4.3 volt zener? Just won't to make sure, "no service manual"
Apr 16, 2019 16:45:26 GMT -5
stridsvognen: Wolfman, its768% better thanyour Marquee for sure. As it can actually display a image.
Apr 14, 2019 13:16:49 GMT -5
wolfman: So how's the black level on that thing? When the screen is supposed to go pitch black do you perceive it as genuinely black? Like the opening of CARS where it goes on and off pitch black. Or Prometheus with stars against a pitch black space.. or any Sci-Fi
Apr 12, 2019 15:18:06 GMT -5
stridsvognen: I have had multiple Digital projectors hanging together with the Marquee, the Sony is actually the first one that i actually turn on and use, so put 100 + hours on it already.
Apr 10, 2019 4:43:23 GMT -5
wolfman: What in the name of God possessed you to go gray.. Stoned are you?
Apr 8, 2019 9:46:25 GMT -5
stridsvognen: Its nice to have a new 5000$ digital to show off next to the Marquee, it makes the Marquee look like it worth all the 35000$ printed on the lable on the box.
Mar 8, 2019 6:38:53 GMT -5
nashou: uh oh!!!! Kurt likes shades of gray!!! Hopefully it will be Dark Dark grey !!!
Mar 4, 2019 7:47:17 GMT -5