having same issue...power immediately switches back to standby everytime I turn power on. It works for many months, had to take system out and put it back in correct ( hopefully...) and now this. Zapped huh? What could I have done to fry the outputs? Jim
An expert who has achieved level 2 by getting 100 points
An expert that got 5 achievements.
An expert who has written 50 answers of more than 400 characters.
An expert who has answered 200 questions.
Re: marantz SR 7200
Most often it is due to improper speaker loading. In other words,
it needs to have from 4 to 8 ohms speaker load and you wired your
speakers in parallel when they should have been wired in series.
What would have been an 8 ohm speaker load in series, turns into a 2
ohm load when in parallel. And with dual voice coil speakers you
just compound the problem. And don't even get me started on
Anyway that is what usually causes an amp to fry. Good luck.
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need. goodluck!
- If you need clarification, ask it in the comment box above.
- Better answers use proper spelling and grammar.
- Provide details, support with references or personal experience.
Tell us some more! Your answer needs to include more details to help people.You can't post answers that contain an email address.Please enter a valid email address.The email address entered is already associated to an account.Login to postPlease use English characters only.
Tip: The max point reward for answering a question is 15.
If you don't use the remote control is it okay? If so, tear apart your remote control, use a Q-tip to clean all the lines in the circuit board where the rubber contacts touch. Then make sure that the rubber buttons don't have any 'gunk' on them that are making them stick. Clean the rubber pad with a qtip with dishsoap. Dry well, put back together and see if she works. Report back on your success. Good luck.
Press AMP then OK on your remote. If the menue does not appear press 9 on the remote. You must have your monitor connected through composit Monitor Out or S-VHS. Also check your multiroom settings. Maybe your OSD signal is diverted through to other room. I do not have SR-7200 any more, unfortunately.
DSP (Digital Signal Processing) Board is probably defective or has Poor solder Connection on one of the Ic's on that board. Board cannot be Obtained from Marantz. Must be troubleshot at component Level and requires a very knowledgable tech to repair it. I have done a few of these in the past and usually charge $50 to Evaluate and Give estimate. firstname.lastname@example.org
It is likely that the PA stage has developed an offset voltage in the output stage. The faulty amplifier channel can be found by progressively disconnecting the collectors of the of the power transistors until the protection fault disappears. Once the faulty channel is found the the cause of the offset has to be traced to the faulty transistor or resistor. Don't forget that if you can smell smoke or burning then there are likely to be components(esp transistors) that have been damaged by the fault. I had a Luxman unit that destroyed 5 transistors in the output stage that was due to an open .5W resistor in the driver stage. Good luck.