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Section 1: About This Manual
This manual gives the information needed to build and install the upgraded power supply
for Dynaco's PAT-5 Preamp. This manual covers the assembly of Rev E hardware. Rev
E hardware.
The Rev E version can support up to 100 mA load current, nearly twice of what earlier
versions can support. This is being done on speculation to prepare for some future
projects.
Who Should Attempt this Project?
You can build this kit if you can:
1. Solder (using normal rosin core solder and a soldering iron).
2. Use simple hand tools like screwdrivers, wire cutters, and pliers.
3. Read and follow directions.
It helps if you:
1. know a bit about electronics, or
2. have a friend who knows a bit about electronics
3. can get to YouTube to watch a few helpful videos about the assembly process
(none are posted as of this version of the manual).
Tools you'll need
You'll need the following tools:
1. Phillips screwdriver (#1 and #2), regular screw-drivers.
2. Pliers or nut drivers suitable for #4 and #6 hardware
3. needle nose pliers (helpful, but not strictly necessary)
4. pencil type soldering iron of 25 to 50 Watts (no huge honking soldering guns or
blowtorches)
5. wire cutters and strippers
6. multi-meter to measure power supply voltages and confirm resistor values
(strongly recommended)!
Helpful Tools
These tools aren't strictly necessary, but make building the kit easier.
1. magnifying glass, if you're over 42!
2. lead bending jig to form axial component leads to the correct span for insertion in
the PCB.
Project Overview
The project consists of the following steps:
1. Building the circuit board.
2. Removing the old power supply
3. Installing and testing the new power supply
4. Completing re-assembly of the preamp.
Page 3 of 18
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