Re: Onkyo HT-R690 AV Receiver Front Right Channel Not Working
Read the schematic is the start, you need to be able to read the diagram to be able to trace the signal paths on the unit based on the diagram, form output back to input if you know what that means.
If you are a real beginner and want to tackle something this complex it is not going to be easy for us to hold your hands on every steps.
So tell us what your experience is first.
-
-
Re: Onkyo HT-R690 AV Receiver Front Right Channel Not Working
Well, you now have the diagram and the AC mV meter, so start tracing out from the output back to the input. Feed audio into Front Left and Front right then use the meter to look at the signal of the working channel and compare it to the non-working channel. It can be a simple as bad connection or bad speaker relay contacts, etc.Leave a comment:
-
Re: Onkyo HT-R690 AV Receiver Front Right Channel Not Working
Not at this time. I did have one here for repair of a faulty HDMI board which I fixed up and I decided to do that swap to see if this one im asking about had a bad one, but the channel worked find in the other unit. The units were not the exact model numbers, but had similar HDMI boards just one had less HDMI's than the other. The other boards looked different.Leave a comment:
-
-
Onkyo HT-R690 AV Receiver Front Right Channel Not Working
Hello,
The front right channel is not working on this one. The receiver does not go into protect mode, it's working fine on all other channels. I checked all the nobel resistors and they checked out ok. The Transistors im assuming are ok or else the unit would go into protect mode. The problem is not the HDMI board as I have put this HDMI board into another unit and all channels worked.
Any ideas anyone?
-
For this Dick Smith TV GE6878 (Thompson) I replaced the broken remote with a universal it kinda works though if its more than a few meters away sometimes the buttons register and sometimes they wont so I bought another remote from another brand and it has the same problem, I've had an old TV in the past that the sensor died completely and I replaced it to fix it could this be a similar problem? I tried looking for a service manual, spare parts for a receiver and a parts list but I couldnt find any info. can someone please help me to find the info online for a service manual or where I can buy... -
Surprisingly enough, this receiver doesn't have the DSP chip issue. The HDMI board does not get hot, and sound over HDMI works fine.
Regardless of the input, the right channel has noise that is clearly noticeable even on average volume level. The only cases when there's no noise is when VCR input is selected (some tracks on the board are damaged, maybe that's why), or if HDMI input is selected but nothing plugged into it. In all other cases, even when no input is connected I still have the noise.
There's some logic behind it. As soon as I select an input I get only left...04-23-2025, 10:09 PM -
Hi friends
I have reverse engineered this tester, schematic is attached and is complete except for capacitor values. These testers annoyingly have no model number but they are the ones you find on the first page of just about any website if you type in "18650 4-channel tester". There is also a 2-channel variant and a newer 8-channel variant. They are very cheap (about £15) and can measure voltage, current, internal resistance and capacity. They have a multicolour display for all these statistics. They also have terminal blocks so that if you want to use a breakout board... -
So I have this home cinema with only the subwoofer and the central speaker working. The unit boots up with blue light, so no protection mode nor short detected. All fonctions are available (radio, cd, aux etc...).
I have the schematic of it but no idea what to look at and how. Seems that the sub and center speaker are both connected to the same relay but I don't get how the 3 other have failed as they are all powered from the same supply? How can I diagnose it safely? -
I picked up an Onkyo HT-R510 that when I plug it in and press the power button will turn on and then a couple of seconds later turn itself off. When it turns on you can hear the relay click and then immediately click again and shut the power to the system off. I spent about 5 hours today trying to troubleshoot it and I did make some progress that may not actually tell me anything. It's still not really working and I'm not quite sure where to go next.
Here's everything I've done so far.
The first thing I did was open it up and check for any burn marks exploded parts...
Leave a comment: