Question about Sony ECM-77 Professional Microphone

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Battery change Please can you tell me how to change the battery on the ECM - 77B thank you

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The battery is housed in the xlr adaptor DC-78. You may need to unscrew the barrell about the outside of it to replace the batt.

Or alternatively use phantom power to run up the mic(this is easiest

. Be sure to connect it to a channel that is phantom power optioned

Here is the spec sheets for it with details of the adaptor you need and battery type required.

Good luck

Posted on Jan 27, 2008


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I'm getting a P 1133 error code for my 2000 subaru outback limited wagon. Is it a faulty Heater circuit or an oxygen sensor? Also where are these parts located on the car? Thanks

The definition of Diagnostic Test Code (DTC) P1133 = "FRONT OXYGEN (A/F) SENSOR HEATER CIRCUIT HIGH INPUT"

Please note that DTCs (A.K.A. "fault codes") NEVER tell you what parts to replace.
The DTC here is telling you which CIRCUIT is malfunctioning. The circuit must be diagnosed to find the exact CAUSE of the malfunction.

The possible causes of this DTC are:
> Battery short circuit in harness between Engine Control Module (ECM) and front oxygen (A/F) sensor connector
> Faulty ECM

Please also note that this is NOT a typical O2 Sensor circuit. This is a 6-pin Air/Fuel Ratio sensor. Proper scan tool and datalink interface equipment is REQUIRED to properly diagnose these circuits.

Where the parts are located:
The A/F sensor is located in the exhaust pipe in front of the catalytic converter. The ECM is located Under the carpet in the passenger front foot-well area. The circuits are located between the two.

Please also Review this article:
What Else Could Be Wrong?

Sep 08, 2011 | Subaru Outback Cars & Trucks

1 Answer

Does the ecm on a 1996 lincoln continentel have anything that has to do with catalatic converters.I would like to know if a new ecm will work without the catalatic converters being on there . (straight...

I can answer the first question. The year of your car will run without the cataltic converters and not affect the performance or fuel milage. Your ECM is not that sophisticated. You can call a parts store and they can tell you where the ECM is located

Jun 16, 2011 | 1996 Lincoln Continental

1 Answer

The ecm is out on my 1996 lincoln continental , please need to know where it is located and how hard it is to change. thanks

The ECM is under hood on the firewall around the master cylinder, there should be two to three bolts that need removal to come out on front side of fire wall. Not to hard of job remove battery cables positive and negative.

Jun 16, 2011 | 1996 Lincoln Continental

2 Answers

1996 bmw z3 323i after changing battery,turns over no spark and radio doesnt work and keyless remote doesnt. please help where is the ecm located if that could be the problem.was running fine until the...

Welcome to fixya Sorry to tell you the BMW dealer will have to reset the code do to the battery was disconnected it is an anti theft deterant system. Lee

Nov 11, 2010 | 1996 BMW Z3 Roadster

1 Answer

My bonniville after it warms up starts to sputter and then it stalls on me???

Try changing the fuel filter,in case it is stopping up,as the engine runs,and change the coolant sensor,this sensor tells the ecm the temp of the engine,to the computer so it can adjust lean to rich and so forth,and some times the coolant sensor just sends no signal at warm up,and the ecm does not know what to do,so it shuts down.If this is helpful,please rate,thank you.

Jun 10, 2010 | 1994 Pontiac Bonneville

1 Answer

Can someone tell me how to reset the service

disconnect the battery for about 30 secs. this will clear out the ECM (computer) and will reset that light for you.

May 02, 2010 | 2001 Suzuki Grand Vitara

1 Answer

Thanks for helping, i would like to change the battery on my 2003 road king but do not know how. can you please tell me?

Rmove phillips screw holding down passenger pillon. Pull pillon back and up a little. Take 5/8" wrench and remove "nuts" now exposed. After removing pull seat up and back over studs. Battery is now exposed. Remove right saddle bag, right side cover, remove ECM fuse. Carefully remove 10mm(?) bolts holding battery cables on, before hand note and or label other connections if present. Lift battery up and out, replace with new, reverse steps.
Important note, battery is very tight fit, and must sit firmly in battery bos, and ALWAYS use a sealed battery. The cost $100+.
Hope this helps,


Dec 12, 2009 | 2005 Harley Davidson FLHR - FLHRI Road...

1 Answer

Check Engine Light came on while driving. No


Thanks for using FixYa. The check engine light is on because ECM (Control Module) detected a fault with your car's system. ECM has self-testing capability. When the computer senses that there is a problem with some of the components it stores the correspondent trouble code(s) in its memory and lights up the "Check Engine" or "Service Engine Soon" light to tell you that there is a problem and your car needs to be looked at. You'll need to get the codes checked from a nearby dealer/mechanic. Please revert with the codes so that I can tell you where exactly the issue is.

Please do rate the solution and revert for further assistance.



Nov 17, 2009 | 1998 Toyota Corolla

2 Answers

Low Audio Level

I found this happens with a bad capsule.

On the end of the wire you have the microphone capsule. If I remember correctly, the capsule can be unscrewed from the microphone amplifier case assembly. This part can be ordered from a supplier for Sony professional parts.

I have also had the wire go defective, and need replacement. With most of these models, the complete capsule assembly has to be replaced along with the new wire.

If you are not used to servicing this type of microphone, Sony has service reps that can service and test the microphone for you.

Jerry G.

Aug 10, 2008 | Sony ECM-77 Professional Microphone

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