Brand new, upgrade blank PCB to replace the original incandescent light bulb board with a long life, low power, LED based board assembly. This classified is just for the bare board and the link to the assembly instructions.
Do you own a Phase Linear PL400 Series 1 Amplifier? It is a great amplifier but maintaining the original incandescent meter light bulbs can be a nuisance, Here is your opportunity to replace the original light board with a long life LED powered replacement.Other parts must be obtained by the purchaser from Mouser Electronics to complete this upgrade. The cost of these parts is less than $5 from Mouser, not including shipping. Detailed photographs, assembly, parts list and installation instructions are located at this link at the end of this listing. There are 4 ultra-bright, wide dispersion Blue LEDs for each meter providing a consistent wash of light for meter illumination. You can choose either white or blue LEDs for your application depending on which LEDs you populate (blue LED part numbers are specified in the parts list). The LEDs are powered with a forward current of 18mA to provide bright, pleasing illumination while reducing the power requirements by over 80% from the original board. A current control resistor is provided for each LED allowing you to tweak with the illumination level if desired. A rectifier bridge is located in the center of the board surrounded on the left and right with 2 filter capacitors. This combination provides a smooth DC source for the LEDs. The cool running LEDs eliminate the heat associated with the original equipment incandescent bulbs and last indefinitely. No more replacing those hard to find bulbs! The printed circuit board is a high quality FR-4 based epoxy glass PCB with HASL tin/lead plating on the solder pad areas replacing the cheap original single sided PL-18A PCB. The replacement PCB is 0.062 inch thick double sided circuit board with plated through holes and white epoxy silkscreen legending on the component side and green solder mask on both sides. It is a direct drop in for the original board size, using the original mounting hardware to secure it in the amplifier. This replacement board includes holes to secure and strain relieve the amplifier wire connections to the LED Light board. This feature can be seen pictured in the photos. The original PL18A wire attachment points would often separate from the PCB, ruining the board. This upgrade kit is for skilled technicians. While installation is not a difficult procedure, the installer should be familiar and comfortable with working on electronic equipment and using a soldering station and associated tools. Ensure good control of soldering iron temperature, not exceeding 600 degrees F, so the LED Light Board is not ruined by excessive heat. If you are not familiar with working on electronic equipment or do not possess the proper equipment, it is recommended that you take your tuner to a service technician that can perform the LED Light Board for you. I accept PayPal for payment through my email address vilhob@comcast.net. First class mail shipping is included in the price for the contiguous 48 US states. If outside of this region or desire a different method of shipment, email me for shipment pricing details.
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