Manley Langevin Dual Vocal Combo 4/2001 - present LDVCP179 and up - Manual (Page 17)

REPLACING FUSES
Changing the fuse is easy and can be done without any tools and while the DVC is still in a rack.
1) Disconnect the IEC AC mains for safety
2) Rotate the fuse cap anti-clockwise 1/4 turn
3) Remove the fuse and replace it with a new slow/blow 1/2 AMP, 250 VOLT, MDL type fuse
4) Reconnect the IEC AC mains, turn on the power and meter lamps should once again glow.
If the new fuse also blows, it means there is probably a problem in the Dual Vocal Combo that needs fixing.
Fuses are meant to blow in those situations to protect against further damage including fire and the unpleasant
smell of transformer meltdown. The DVC will need to be sent to the dealer or factory for service.
To change the fuse for the Phantom voltage supply you will need to disconnect the unit from the wall, remove
the top cover off, fuse is located between the two VU meters on the back side. use a fast blow fuse AGC 4/10A
There are no parts that are user servicable. Electrolytic Capacitors should probably be replaced after
10 years in audio gear and some say ICs, transistors and pots should be replaced in 20 years to keep the unit in
optimum condition. This is a general guide for audio gear that is intended to be used for decades. On the other
hand, you can expect to throw away most digital gear after 5 years because in 3 years new stuff does 10 times
more and costs 10 times less. Funny how that stuff ages and fine analog keeps being used for decades. In 1999
64 megs of memory costs about $100 and is 8 chips on 1 module. In 1974 it took 150,000 chips and cost $3
million bucks and now its worth is nothing. Good Analog is a long term thing.
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Phantom Volts Fuse = AGC 4/10A Fast blow