Melos SHA Gold - what may be the fix..


for my preamp that will not come out of mute mode?

Remote control must be used but can get no response from "power" (in effect the on switch). The manual descibes as "play mute off". The remote does still control the other functions such as volume motor.

What may be the problem and what techs should I consider sending the unit for repair?
player
thank you. I will go through and check fuses and see if
I overlooked any thing of the kind you suggest. Certainly no mention in the owners' manual.

Seems to me I recall reading a post mentioning some kind of photocoupler or a photo related replaceable part that can burn out????
Hi - I too have a Melos SHA Gold with exactly the same problem. In my case, i have tracked it down to a unique PLA chip (near the balance pot), and have thus assumed that it is irreplacable. However....the 2 relays that control the mute are on the pho-teniometer board and are well worth checking, as is the diode and the driver transistor for the relays. Remember, if the tranny is not switching, it is highly probable that the diode is dead too, so replace it at the same time as the transistor.
In my case, I am going to rip out the entire board, replace the volume pot with a decent ALPS one and hard wire whatever I have left. I'll let you have the details when I have done, just in case you end up following my path.