Description: Mackie SRM450 Active Speaker/Monitor Repair Kit If there is a defect in the primary supply, the FET transistor Q21 usually has a short circuit. The fuse is then also defective.The PWM controller U36 should then be replaced preventively together with the Q21. I offer a set with these components here: 1x U36: UC3842, PWM controller 1x Q21: 12N60, N-Channel MOSFET TO-220F I don't offer fuses here because they vary by country: 120V: 6.3A, 230V: 3.15A. After the purchase I will send a message via eBay with a download link for files such as: Schematic with assembly drawing and data sheets as PDF. The device must be opened to replace components. Attention, pull out the mains plug! Caution, electrolytic capacitors can carry dangerous voltages! Wait long enough for the tensions to discharge. Photos help to screw the many screws back into the right place at the end. Desoldering the components requires soldering skills and suitable tools and equipment. Make sure there are no other shorts on the board. Pay attention to the marking before inserting! Don't forget the ferrite when installing. Remove this from the old FET. When assembling, make sure that the insulation on the FET components is undamaged. Consequential errors due to the short circuit cannot be ruled out. I decline any responsibility for damage. No guaranteeNo Return Free shipping within SwitzerlandShipping with tracking worldwide.
Price: 6.69 USD
Location: Baden
End Time: 2023-10-15T17:59:49.000Z
Shipping Cost: 13.29 USD
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Item Specifics
All returns accepted: ReturnsNotAccepted
Return policy details:
Brand: Mackie
Connectivity: Wired
MPN: Non applicabile
Model: SRM450
Particularities: Active
Type: PA speakers
