Miller and Kreisel Servo Subwoofer The Volkswoofer - Loud Hum Buzz repair

Another Miller and Kreisel amp internals sent in for repair. This time it is an early Volkswoofer from MK. I did replace all of the electrolytic capacitors and serviced the bass level pot too. I replaced the red LED indicator and the burnt dropping resistor also. I added extra heat sink compound the the output IC to extend its life as well.

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Thank you to these people that have supported my channel by making a donation or by having me repair their unit.

Michael Mazer Mike Bale David Arballo Richard Hudson Karen Shegog Rudy Kraker Dan Latorre Jim Louderback Philip Brown (Thank you for monthly support) Justin Tuhua Cynthia Adams John Roach John Quinn Ashley Silas Sherri Parsons Jim McCarthy David Arballo Steve Navarro Keith Claro Frank Conlon Graham Foral Bob Hendrix Jim Meschler David Jacobson Randy Fink Scott Kullen Obaid Khan Robert Brothers Timothy Edds Brian Gay Owen Flint Dana Dainels Tyler Bridge Dena Hamilton Paul Agbuya Samuel & Nancy Guich Dot Morgan Timothy Ritchel William Holloman Cynthia Adams Andrew Oros George Savage Graham Foral Paul Agbuya Scott DuVall Christian Brenzel Russell Houtz Philip Brown Michael King Erick Pastor Robert Ettinger Christopher Cicero Heath Lasswell Timothy Ritchel Benjamin Rubio Michael Dukes Dot Morgan Casey Cane Teri DeLeo Kelly Knutson Howard Goble Diana Williams Reed Graham Christopher Wang David Ammerlaan John Johnson Shaheed Amirkhan Brett Sherry Joseph L Ozvold Sweidan Omar John Eggers Linda Kuo Daniel Pyles Melanie Branton Lisa Sklar Barry Marchant John Harper Larry Mcdonald Annette Lewis Howard Goble Hugo Tajimaroa M R Rajesh Uri Cohen

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00:00 Intro and first look
01:10 The power supply
02:02 Checking voltages on power supply
02:54 ESR power supply capacitors
03:38 ESR small electrolytic capacitors
04:24 The burnt resistor
04:52 Power applied before repair
05:49 Calculating LED resistor value
07:06 The replacement capacitors
07:28 Replacing all capacitors
08:55 ESR all old capacitors
10:06 Adding more heat sink compound
11:00 After repair testing
11:56 Servicing the Allen Bradley pot with Deoxit D5
14:43 Adding some hot glue to the radial capacitor
15:31 Final thoughts
16:04 Closing words
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