Beomaster 5500 T4a fuse blows every time power is connected

6 replies
D(
Offline
dan1969 (archived2)
Bronze
Posted April 27, 2013 at 18:25 GMT
#2196662

hi ...

I have no electrical engineering knowledge... i have a multimeter but v.little idea how to use it..

so now you know what your up against! 🙂

Therapeutic as it is watching the fuse blow i figured it wasn't worth sacrificing a 3rd one to watch it go up in an orange flash.... so i need help understanding the potential root cause(s).

The fuse is located after the power relay and big copper coil thing. Its the next component in the circuit after the big copper coil thing plugs into the circuit board with the two green wires.

In terms of power flow is the issue likely to be upstream of the fuse between the mains power cable connecting to the narrow board with a cap and unidentified resistor/transistor type things) or it could be an issue down stream in the main body of the unit?

I know this is a weak assed description but if you know where to look i can follow instruction well despite my total lack of understanding.

Dan

 

DI
Offline
Dillen
BronzeModeratorFounder
Posted April 27, 2013 at 19:13 GMT
#2196663

I answered your PM regarding this.

Martin

Beobuddy
Offline
Beobuddy
BronzeFounder
Posted April 28, 2013 at 12:00 GMT
#2196664

Another BM5500 for the "Workbench" then.....

 

Location: Utrecht

Quite a challenge to achieve "Less is More" while having the Beovirus.
D(
Offline
dan1969 (archived2)
Bronze
Posted April 28, 2013 at 12:05 GMT
#2196665

Yep... Dillen reckons its nearly always caused by the 4700uf 16v cap at c15 so I will swap it out and hope I don't mess it up:) still have to rremove quite a lot of stufff to get to it but seems straightforward  enough.

DI
Offline
Dillen
BronzeModeratorFounder
Posted April 28, 2013 at 13:30 GMT
#2196666

The only thing you will have to remove is the bottom plate.
With a little skill, you will be able to desolder the old capacitor without taking the whole module
out of the Beomaster.

Martin

D(
Offline
dan1969 (archived2)
Bronze
Posted April 28, 2013 at 18:42 GMT
#2196667

have put it back together... :)

just awaiting part ...

there seemed to be a variety of 16v 4700uf out there from same supplier got panasonic radial eeufk1c472L - hopefully it does te same job only diff i could see was the old one was +85degrees this is 105 degrees. does it make any difference in this case?

 

Dan

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