yamaha a-s2100 dream/repair

[Firebottle]

PM sent.

[smithie]

model under the one i've brought but shows you how "full" it is in there and what we,re dealing with

[smithie]

and this is the reply i got from the two yamaha service centure,only showing one copy as they are pretty much the same word for word

Many thanks for your recent enquiry.

In order for Sontec to progress your repair we will need you to either send in the item concerned or bring it to us in person.

There is a non-refundable deposit of £45.00 (Inc VAT), which is to help cover the investigation time of the engineer and production of an estimate should further time or parts be required.
If you accept the estimate this sum will be deducted from the final total cost.

Should you decline, the £45.00 payment is retained in order to help to cover the costs and a return delivery charge will be made. Unfortunately we are unable to commit to a cost of repair without first having the unit inspected by an engineer. Please note that in the unlikely event that we are unable to source parts required to complete the repair the £45.00 payment is retained in order to help to cover the costs and a return delivery charge will be made.

If you decide to send the item to us, could you ensure that you include your name, address, telephone number and email address and a brief outline of the problem. If there are any existing damages to the unit it would be helpful if you could advise of these also in order that we do not assume the unit to have been damaged in transit.

When packing the item for transit please ensure that it is securely packaged in a sturdy carton with a minimum of 3 inches (7-8 cms) of packaging all around the product. Be careful to store the mains plug is safely away from the item itself with the pins facing outwards.

Address to send it to is below -

[JohnJo]

and this is the reply i got from the two yamaha service centure,only showing one copy as they are pretty much the same word for word

Many thanks for your recent enquiry.

In order for Sontec to progress your repair we will need you to either send in the item concerned or bring it to us in person.

There is a non-refundable deposit of £45.00 (Inc VAT), which is to help cover the investigation time of the engineer and production of an estimate should further time or parts be required.
If you accept the estimate this sum will be deducted from the final total cost.

Should you decline, the £45.00 payment is retained in order to help to cover the costs and a return delivery charge will be made. Unfortunately we are unable to commit to a cost of repair without first having the unit inspected by an engineer. Please note that in the unlikely event that we are unable to source parts required to complete the repair the £45.00 payment is retained in order to help to cover the costs and a return delivery charge will be made.

If you decide to send the item to us, could you ensure that you include your name, address, telephone number and email address and a brief outline of the problem. If there are any existing damages to the unit it would be helpful if you could advise of these also in order that we do not assume the unit to have been damaged in transit.

When packing the item for transit please ensure that it is securely packaged in a sturdy carton with a minimum of 3 inches (7-8 cms) of packaging all around the product. Be careful to store the mains plug is safely away from the item itself with the pins facing outwards.

Address to send it to is below -

That sounds very sensible and reasonable although if it's still a current model I'd like to think they could get the parts, probably just a standard disclaimer to cover discontinued models too.

[Shovel_Knight]

I sometimes had to deal with service centres in my past life. Those official service places are usually not authorised to do board level repairs. For example, if there is an output transistor failure, they won't replace the transistor, instead they will order a whole new power amp board and charge you $$$$$.

[smithie]

Wow, that is a bargain for such a classy high spec unit.

The manual says in a few places that the protection circuit kicks in if any speaker cables are shorted or touching the rear panel. I guess you have already looked at that. So I strongly assume either the protection module or another module is not seated correctly. With the unit off and lid removed use a flashlight and carefully check for loose cables and also 'jiggle' all cables and modules.

If there are any cables, such as ribbon cables, that can easily be unplugged/plugged I'd do that. I'd also gently push down any modules. Any if any dust build up anywhere do a good brush/vacuum. Obviously do everything gently but firmly. With a bit of luck all you have is a weak connection somewhere and these steps will cure it.

hi edward
i did reply to you before but it disappeared...never to be seen again....so ill try again.
thanks for your input and tips,its quite a sophisticated protection and diagnostic setup on these amps even if the flashing light interface does not strike you as much.
the microprocessor works from a lot of check points within the amp so im guessing and hoping that its putting me into the ball park area of the fault....but ive seen the film 2001 and what the crazy computer "al" got up to so i wont be taking it as gospel
ive had a quick look for anything obvious and wiggled a few bits to no joy,the trouble is its so cramped in there that it is going to have to be at least partially stripped down just to get access and to see what's going on and to get to the test points.
still im hoping the end result of a working amp will make this endeavour worth while...here's hoping

regards
smithie

[smithie]

I sometimes had to deal with service centres in my past life. Those official service places are usually not authorised to do board level repairs. For example, if there is an output transistor failure, they won't replace the transistor, instead they will order a whole new power amp board and charge you $$$$$.

that's not good to hear
does anyone know if yamaha will sell parts and spares for their hifi products direct to mr "man in a shed/kitchen" have a go type peeps?

smithie

[Edward]

hi edward
i did reply to you before but it disappeared...never to be seen again....so ill try again.
thanks for your input and tips,its quite a sophisticated protection and diagnostic setup on these amps even if the flashing light interface does not strike you as much.
the microprocessor works from a lot of check points within the amp so im guessing and hoping that its putting me into the ball park area of the fault....but ive seen the film 2001 and what the crazy computer "al" got up to so i wont be taking it as gospel
ive had a quick look for anything obvious and wiggled a few bits to no joy,the trouble is its so cramped in there that it is going to have to be at least partially stripped down just to get access and to see what's going on and to get to the test points.
still im hoping the end result of a working amp will make this endeavour worth while...here's hoping

regards
smithie

Yes I also hate it when I've done a long response and it goes up in smoke.

With non booting computers I often find that reseating stuff will cure things. At times with amps as well, particularly if old. More recently with a valve amp the protection circuit was kicking in. Turned out that the legs on one valve was slightly oxidized so a quick wipe over with an emery board all was well.

Yes looking at the vid you posted I see the Yammy is very complex and lots of areas not easily accessible.

Looks like a beautiful amp. I'd certainly also have snapped it up at the price you mentioned - even with the protection issue. With a bit of luck the fix is simple/cheap.

[smithie]

Yes I also hate it when I've done a long response and it goes up in smoke.

With non booting computers I often find that reseating stuff will cure things. At times with amps as well, particularly if old. More recently with a valve amp the protection circuit was kicking in. Turned out that the legs on one valve was slightly oxidized so a quick wipe over with an emery board all was well.

Yes looking at the vid you posted I see the Yammy is very complex and lots of areas not easily accessible.

Looks like a beautiful amp. I'd certainly also have snapped it up at the price you mentioned - even with the protection issue. With a bit of luck the fix is simple/cheap.

thanks edward
i have tried the reset function on this amp afew times now with no joy,at least that means the protection and microprocessor side of things seem to be working as they should which im guessing would be alot harder to sort out....that stuff is a black art at times....if a reboot or a thump or two don't work then im usually out my depth on that side of things
i never really got a response out of the owner regarding what happened when the fault happened so have no idea if it was being abused,shorted,early component failure or whatever but as like you say for this quality and level of amp i thought it was well worth the risk,plus i wanted one....well i wanted one in silver and working and mines black and non working,but at least ive got one,cant have it all can we

all the best
smithie

[Audio Al]

Do you know how old it is ? ,
I am NO expert but with most things HIFI people start by replacing ageing capacitors