Amp repair

[bignige]

Hi all,

Anyone on here able to look at fixing a Sony amp -or any suggestions for someone who could have a look?

It's a Sony DA9000ES

N

 

[Gray]

What's the fault symptom and whereabouts are you bignige?

 

[drummerman]

Hi all,

Anyone on here able to look at fixing a Sony amp -or any suggestions for someone who could have a look?

It's a Sony DA9000ES

N

If you head over to PFM there are a couple of Repairers regularly posting. Arkless Electronics being one.

 

[bignige]

What's the fault symptom and whereabouts are you bignige?

After switching on it says "protector check code eleven”

Checked the speaker connections and no issues there.

It is a guy on Facebook I am trying to help and he is in Birmingham.

N

 

[Gray]

Speakers and their wiring was where to look by what others are saying. Presumably he's powered down and up again / tried factory reset. Drummerman's suggestion seems like a good one for him.

 

[bignige]

Have posted on PFM.

The guy seems gutted as it is apparently a rather expensive amp?

N

 

[drummerman]

Just saw he can't help.

Big thing. None on my ebay at present so I don't know how much its worth on the used market.

 

[bignige]

Don't know the used value but he paid £3K for it new and it is his "dream amp".

So, I am trying to help him but no luck as yet...

N

 

[newlash09]

is this gentleman you are posting for from the navy. Remember a lot of us recommending this particular amp used to a sailor from Birmingham. So was curious

 

[insider9]

These were big indeed. However lose value very,very quickly. Many AV amps that were around £1,000 back then are selling for under £50. I'm sure this one would go for much more though.

 

[newlash09]

Don't know the used value but he paid £3K for it new and it is his "dream amp".

So, I am trying to help him but no luck as yet...

N

somehow missed reading this. Please disregard my post 🙂

 

[bignige]

is this gentleman you are posting for from the navy. Remember a lot of us recommending this particular amp used to a sailor from Birmingham. So was curious

Don't know.

N

 

[newlash09]

any music kit service center should be able to sort it out. Too much of voodoo in our hobby. I recenty paid my local electrician the equivalent of 5 pounds to renew the voice coil of the burnt tweeter of my pmc 20.26 speakers. And when he was done, i measured the resistance of the renewed tweeter with the still intact tweeter, and they both measured exactly the same. I can only imagine what the cost of a new tweeter could be. So, please ask him to look around for any electrical work shop. Dont necessarily need a sony service centre to sort it out, where they will charge him a bomb, which as per them is just a fraction of the cost of the amp

 

[drummerman]

any music kit service center should be able to sort it out. Too much of voodoo in our hobby. I recenty paid my local electrician the equivalent of 5 pounds to renew the voice coil of the burnt tweeter of my pmc 20.26 speakers. And when he was done, i measured the resistance of the renewed tweeter with the still intact tweeter, and they both measured exactly the same. I can only imagine what the cost of a new tweeter could be. So, please ask him to look around for any electrical work shop. Dont necessarily need a sony service centre to sort it out, where they will charge him a bomb, which as per them is just a fraction of the cost of the amp

This may be slightly different 🙂

Its finding a repairer that is willing to try in the first instance and one that is local. Shipping this thing may cost more than its worth?

A quick google of Sony's 'Fault Code 11' reveals many wonderful layman diagnosis on what it could be. - From faulty transistors, fuses, simply resetting it to goblins making a home in there. - Maybe I made the last one up.

As Arkless said, big complicated thing in the best Sony tradition. Hope you can sort it.

I still have a STR DB930. Fantastic in 2 channel.

 

[bignige]

Thanks. Have passed that on to him.

N

 

[Vladimir]

He should disconnect everything from the amp. No speaker wires, no cables except the power cord going in the mains.

1) If the error code 11 appears again when the amplifier is turned on or after 1h of idling, the amp has a failing component. Could be a simple fix for an experienced tech.

- measure DC offset on the terminals. Is it bigger than 25mV DC?

2) If no error appears, then it could mean the problem is elsewhere.

- there's a problem how the speakers are connected, arangement of terminals, out of phase, or bits of wire touching.

- the speakers that are connected are missmatched in impedance (never combine 4ohms and 8ohms).

- some of the speaker drivers have blown.

- speaker crossover component failed.

- also I'd test the amp with everything disconected, but attach headphones.

 

[newlash09]

He should disconnect everything from the amp. No speaker wires, no cables except the power cord going in the mains.

1) If the error code 11 appears again when the amplifier is turned on or after 1h of idling, the amp has a failing component. Could be a simple fix for an experienced tech.

- measure DC offset on the terminals. Is it bigger than 25mV DC?

2) If no error appears, then it could mean the problem is elsewhere.

- there's a problem how the speakers are connected, arangement of terminals, out of phase, or bits of wire touching.

- the speakers that are connected are missmatched in impedance (never combine 4ohms and 8ohms).

- some of the speaker drivers have blown are shorted.

- speaker crossover component failed.

- also I'd test the amp with everything disconected, but attach headphones.

Upto your in depth knowledge posts as ever 🙂

 

[bignige]

He has confirmed that he is not and never has been a sailor!

N

 

[newlash09]

That was so prompt. Realy relieved.

But i have to thank you for checkng for me... a really great friend you must be 🙂