Beomaster 4500

8 replies
LO
loureed5
Bronze
183 posts
Posted March 25, 2023 at 06:48 GMT
#1642092
Hoping for an easy fix to my Beomaster 4500. Turns on but won't play anything. Comes on with a "code" message. All functions are not able to play. I tried a re-boot to no avail. Would be very grateful to find a solution that I could try ? (Nearest service centre is 70 miles away, and charges a fortune just to look at it ).
Guy
Guy
GoldModerator
4528 posts
Posted March 25, 2023 at 20:20 GMT
#1654979
It sounds like the 3v lithium battery supplying the microprocessor needs replacing - quite a common fault.  It is soldered in place hence requires some technical knowledge and soldering skill to replace.  Have a search of this and the archived forums for advice and/or join as a silver or gold member to download the service manual.

Location: Warwickshire, UK

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PI
Pindsen
Bronze
147 posts
Posted March 26, 2023 at 10:04 GMT
#1654995
Hi, Could you explain what this "Code" message tells. I have had several BM3500/4500 with faulty backup battery but they still work they just don't remember the settings after power has been off. Some BM3500/4500 have trouble with the Mute relay on Speaker 1, do you have the same problem when you connect your speakers to Speaker output 2? Can you operate the Beomaster via the front touch buttons? /Pindsen

Location: Denmark

DI
Dillen
BronzeModerator
12777 posts
Posted March 26, 2023 at 11:26 GMT
#1654996
A Beomaster with a bad backup battery can act up in different ways. If nobody knows which settings and what content is being stored in memory, things really get quite unpredictable. Martin
DI
Dillen
BronzeModerator
12777 posts
Posted December 13, 2023 at 07:53 GMT
#1660860
Did you try the method stated in the service manual? Martin
KR
kronzilla
Bronze
311 posts
Posted December 13, 2023 at 10:20 GMT
#1660870
Hello Martin, It seems that i did not find the method described, or i overlooked it. Would you be so kind to write it down here for me? ? Thank you for the fast reply   David
DI
Dillen
BronzeModerator
12777 posts
Posted December 13, 2023 at 13:08 GMT
#1660873
In test-mode press 7 to delete RAM settings and revert to defaults. Service manual page 7-2 and 7-3 describes it. Martin
KR
kronzilla
Bronze
311 posts
Posted December 13, 2023 at 13:29 GMT
#1660874
Hello Martin, Thank you ?? I did not read it in the manual. Feeling a little dumb now ?? David
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