Sony CDX-M800 CD Player Logo
Anonymous Posted on Jan 29, 2009

Sony cdx m800 head unit

Hello there was told to ask you about how to decode this unit is it true you can solder contacts in a open window on the base of the unit if so could you please send me a pic of this many thanx nick please send to [email protected]

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  • Master 1,512 Answers
  • Posted on Jan 30, 2009
Anonymous
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If it is the security code you are looking for, try these solutions. See how you get on. Solutions that have been tagged as workers... try the soft fix first, then if your game,the 4 blob trick... dunno bout that one??
http://www.fixya.com/support/t225385-sony_cdx_m800_code


 I recall changing out the 8 pin eeprom chip where the security code was stored on Sony and Pioneer Head units where customers had forgotten their code when the units were brought in for service, so  you start with a fresh code. That was a few years back but:).  
Will have an 8 pin dip chip as detailed in this post if thats the case for this unit. You may need to supply your Identification toSony to order the part. This is how it used to be,and it may be doable only at a sony agent, this being a security part for the unit. Let me know howyouget on. 
regards robotek . 

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