Fully assembled, I never see any power to the STK modules. The amp board never gets powered up but the main relay and protection relays do click with the board in place, but the left output relay clicks back off almost instantly. All I get is the display lights and the ability to select functions, but nothing is actually being switched. I don't think anything on the HDMI board is working. The power board has no connection to the amp board, the 5 pin cable to the relay goes to the HDMI board as well. The main amp board has two black cables that go to the HDMI board, one 7 pin, one 5 pin. With the HDMI board connected, the unit won't stay powered up, it comes on for a few minutes then clicks back off again randomly. That relay comes on and stays on normally even with the bad HDMI board, but the two relays closest to the speaker outputs click back off after a few seconds.
When I jump POWERD to GNDDG only the relay on the power board clicks, nothing else seems to come on. I'm not sure how the HDMI board powered up the amp, which set of leads? Is it a matter of jumping two wires or feeding power into the main board? It looks to me like two of the wires from the transformer go right to the amp board directly, so my guess is its got power there somewhere, but its waiting to be switched on somehow.Ĭlick to expand.
Onkyo hdmi board buy how to#
I need to figure out how to turn on the amp as a stand alone, no control panel, no hdmi board, no video board. I have zero use for a surround receiver, but a spare garage amp would be fine.Īs it sits, nothing but the display powers up, the HDMI board is what turns on the amp from what I'm told. The other chip on the board is all blackened around the edges too, so my guess is it just got to hot. My bets are on a bad chip in this one, if I press on the chip, the receiver turns off, the chip doesn't even get warm. Onkyo gave a gift certificate for 40% off a new receiver but I wasn't interested. I tried reflowing the chip but it didn't get it going. Has anyone else tried this on a newer amp? My thought is that it is an 80wpc amp in two channel, and if I were able to power it up as a stand alone main amp, it may make a decent garage system rather than just sending it to the dump or stripping it for parts. The main amp board had no connection to the front panel, that all connected to the HDMI board and video board. I'm thinking that it may only be a matter of either supplying power to a particular section or making a certain connection to power up just the amp itself. Since the main amp has only a pair of Sanyo STK 443 chips on it, I would think that the amp board should be able to be powered up and used as a stand alone power amp? The inputs and outputs are attached, the transformer appears to be wired into the protection relay section. With those removed, I have what looks like a basic chip amp board with a power supply and transformer off to one side. and the front panel is only connected to the HDMI board.
Onkyo hdmi board buy tv#
I can clearly ID the HDMI board, the Video board, and the TV board.
Onkyo hdmi board buy series#
The whole thing is a series of small boards interconnected with ribbon cables. The amp is presumably ok but unable to turn on without the functioning HDMI board. Apparently the HDMI board and DTS chip controls this whole receiver. I don't care to buy another, but can't see just trashing this thing since the issue is in the HDMI board not the amp. It died with only 20 hours of use after 8 years, Onkyo says the program and warranty are up on these and issued a 40% coupon on a new unit. I have a dead, no sound, Onkyo TX-NR509 surround sound receiver.
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