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Hello Even after disconnecting the speakers, the systems shut down, means that there is something short inside the set. Normally, the output amplifier section circuits will have the short. The set need service, and may have to replace the audio output IC of audio secion. Contact the nearest JVC authorised service center at your town. OK.
Hi, MHC-RV777D shuts off itself because of protection mode that is activated to avoid further damage due to defective amplifier output IC in unit.
You need to check/ replace output amplifier IC to solve this issue, if you are not familiar with electronics stuff repair then local repair shop will do this job for you.
Hope these info will help you.
Let me know if you have additional question.
Its a little hard to diagnose over the computer. I assume there is no sound from the amp EVER. I assume you have tried other sources. I assume the unit worked OK until the IC blew. I assume you replaced the IC yourself?
Often, parts with the IC also fail. There maybe fuses that look just like little resistors along with the IC. They might be blown. There are parts in the circuit to test if there are speaker problems called power resistors. These will frequently open circuit when the IC Blows - you won't be able to see anything visually. If your stereo normally makes a 'Click' sound just before the sound comes on, and now there is no click, this indicates the repair of the IC is not complete yet - find the blown part.
SP7615 is a surface mounted LED driver IC that has 8 pins. If this is the part you are looking for, it can be ordered from Mouser.com for $68.00 each. I suspect that this is not the part you need. Can you describe the problem you are trying to resolve?
There are a number of reasons for this type of behavior, but the resolutions depend upon the make and model of the unit involved. Can you please suplpy that info as well as the IC that was changed and I should be able to help.