This is a custom listing for a Klipsch owner who had a power spike or surge in the household’s 120 VAC lines. A new metal oxide varistor (MOV EPCOS TDK B72214S2141K101) and two fuses are included for a Klipsch ProMedia 5.1 computer speaker system. The varistor is rated for maximum 140 VAC. It is rated to absorb 55 Joules and a peak surge of 6 kA. If your power grid has regular fluctuations, it may be better to also use a series mode power filter (always advisable) with your audio electronics.

The original MOV is located on the line filter board, next to the 5 A fuse. It is typically either a yellow or blue disk. When it fails/sacrifices itself, often there will be soot left on the nearby circuit board and the device will have split open from heat as it briefly burned. If a ProMedia 5.1 system blows its 5A fuse as soon as it is plugged in--before power is even turned on at the control pod/box, then the MOV is the prime suspect. The old MOV can be split apart, each lead can be separately heated with a soldering iron to melt the solder, and each lead can then be removed. It is possible to replace a MOV without removing the line filter board, though I have replaced many of these via either method: with and without removing the line filter board.

There is a 1.6 A fuse included for testing. The ProMedia 5.1 system will not blow the 1.6 A fuse when power is applied if the ProMedia is working correctly. The system draws less than 1/2 amp at low volume.  However, the 1.6A fuse will blow more quickly if there is a problem, sometimes preventing further damage that can occur if testing with the heavier 5A slow-blow fuse.  Once the system has passed its test with the 1.6 A fuse, the owner may install the included regular 5 ampere slow-blow fuse for normal system operation.

Installation Option: If an owner prefers to have me replace the MOV and fuse, the buyer can request that the kit not be mailed so that instead the amplifier can be shipped here. (This is why the listing gives a 10-business day window to ship). At time of purchase, you may see a place to add a note to the seller, and can request shipping information where to ship. I can also provide photos for removing the amplifier panel, which boxes are inexpensive and work well to double-box (Walmart; $1 each) and packing tips. Cost for labor is typically $50. Return shipping to the lower 48 states is typically $18.