topic CMTBX70DBi microsystem sound problem in Hi-fi Systems

CMTBX70DBi microsystem sound problem

manxman1 — Thu, 01 Sep 2011 17:16:27 GMT

I've had this microsystem for just over two years (now superseded by the BX77DBi). Worked well, but the sound has just died. All of the functions work, CD plays, radio tunes, etc but there is no output from the speakers or phones socket. I've checked the speakers and they are fine with another sound unit.

Can anyone help or do I just scrap this system and buy a new one?

CMTBX70DBi microsystem sound problem

chippy47 — Wed, 07 Sep 2011 16:25:01 GMT

Not going to be much help but i have that microsystem and mine has done the same. Its hardly been used as its been in our holiday home. All functions work but no sound and the speakers work fine on other units!!!!!

It must be only 2 years old, sickening! Is it worth fixing?

CMTBX70DBi microsystem sound problem

nitikarathi13 — Fri, 09 Sep 2011 18:32:10 GMT

I have a seperate issue with this system. We have also owned this for nearly 2 years but only been using it frequently for 4months. Everything is OK except the system goes on standby when I connect the ipod. I dont know whats that about.

CMTBX70DBi microsystem sound problem

manxman1 — Wed, 21 Sep 2011 20:18:48 GMT

Mine had also hardly been used, so clearly a reliability issue, which is a shame for Sony. I've had this fixed by an independent local 'fix it' shop. It needed a new integrated circuit (STK433-730) which was about c£30 plus £38 labour (an hour and a half). Sony wanted £55 just to look at the unit (unrefundable) plus whatever it cost to replace - logically at least £123 when a new unit is c£140.

The repair shop did say the problem could have been caused by a number of things, but I get the feeling yours is probably the same issue.

Good luck!