Onkyo TX-SV717Pro will not come out of standby.
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From: Gary L. Woodruff on 28 Jan 2010 12:27 I have a Onkyo TX-SV717Pro that will not come out of standby. PS is sending 13v out. i have checked the output transistors and they are good. does anyone know of a common problem for these amps? Any and all help is greatly appreciated. Gary
From: Mark Zacharias on 28 Jan 2010 20:52 "Gary L. Woodruff" <woodruffrepair(a)frontiernet.net> wrote in message news:2Oj8n.15887$kQ5.4429(a)newsfe08.iad... >I have a Onkyo TX-SV717Pro that will not come out of standby. PS is sending >13v out. i have checked the output transistors and they are good. does >anyone know of a common problem for these amps? > > Any and all help is greatly appreciated. > > Gary Is it clicking repeatedly? Mark Z.
From: Tim Schwartz on 29 Jan 2010 08:31 On 1/28/2010 12:27 PM, Gary L. Woodruff wrote: > I have a Onkyo TX-SV717Pro that will not come out of standby. PS is > sending 13v out. i have checked the output transistors and they are > good. does anyone know of a common problem for these amps? > > Any and all help is greatly appreciated. > > Gary Gary, I have a recollection of a different model from the same era (TX-SV414PRO) that had some 1/4 watt fuse resistors that would open. These were on the main board. Sorry I don't remember the values, but they were under 100 ohms, and I think it was R921,922,923,924. I'd always change all four, and upgrade them to half watters. Again, I'm recalling from a different model so this may not apply. Regards, Tim Schwartz Bristol Electronics
From: Mark Zacharias on 31 Jan 2010 08:20 "Tim Schwartz" <tim(a)bristolnj.com> wrote in message news:4B62E318.8060705(a)bristolnj.com... > On 1/28/2010 12:27 PM, Gary L. Woodruff wrote: >> I have a Onkyo TX-SV717Pro that will not come out of standby. PS is >> sending 13v out. i have checked the output transistors and they are >> good. does anyone know of a common problem for these amps? >> >> Any and all help is greatly appreciated. >> >> Gary > > Gary, > > I have a recollection of a different model from the same era (TX-SV414PRO) > that had some 1/4 watt fuse resistors that would open. These were on the > main board. Sorry I don't remember the values, but they were under 100 > ohms, and I think it was R921,922,923,924. I'd always change all four, > and upgrade them to half watters. > > Again, I'm recalling from a different model so this may not apply. > > Regards, > Tim Schwartz > Bristol Electronics > I'm pretty sure it does apply. Very similar inside. These models were real "cookers". There was a very involved mod which involved actually cutting away the burned area and adding a daughter board complete with regulators. I never did this mod myself. These units weren't worth it even back then... Mark Z.
From: Gary L. Woodruff on 4 Feb 2010 12:35
There is no relays clicking and no burnt components or even darkened areas on any pcb. Ive got +13v going out from the pc but nothing coming back on the power line(labeled on ps connector). I found q706 to be bad and replaced it. I get vdd of 2.34vdc into q701 (microprocessor). I also see 5vdc from the power switch shorting to gnd when activated. I do not see anything coming out of the pin labeled power. I am thinking either the IC should have a greater vdd or the chip is bad? Thanks for any and all help Gary Gary L. Woodruff wrote: > I have a Onkyo TX-SV717Pro that will not come out of standby. PS is > sending 13v out. i have checked the output transistors and they are > good. does anyone know of a common problem for these amps? > > Any and all help is greatly appreciated. > > Gary |