Sunday, February 19, 2017

ARP Odyssey II 2813 Keyboard Synthesizer SN 0727


via this auction

Interesting look at the cost of repairing the synth below.

"Acquired in 1998 in San Francisco, this Arp was fully restored by SynthPro in 2014. Fully functional, perfect working order. Even had the bushing in the keyboard replaced to make the action smooth. A great Arp if you're looking for an Arp!

2104 work done below:

Problems:
1. Broken slider switch for OSC1 LFO PWM
2. Broken slider switch for OSC2 LFO FM
3. Chassis missing all screws
4. Slider pots stuck, needs cleaning
5. bad key contacts along with bad key bushings
6. KB CV memory drifting
7. bad 100k ohm slider for OSC1 S/H-ADSR frequency control

Solutions:
1. Replace broken slider switch for OSC1 LFO PWM
2. Replace broken slider switch for OSC2 LFO FM
3. Install new chassis screws
4. complete chassis, circuit board, and slider cleaning and slider re-greasing
5. Replace key contacts
6. Replace C8 along with stressed transistor
7. Replace 100k ohm slider for OSC1 S/H-ADSR frequency control
8. replace commonly failure components to prevent failures

Now for the parts list:

Slider switches = $2.00 each X 2 = $4.00

Chassis screws, (size 6-32 X 1/2 ) = $1.98 pack of 12 = $1.98

Chassis screws, (size M4- .70 X10) = $0.56 pack of 2 = $0.56

Key bushings = $1.08 X 37 = $1.08 each = $39.96

100k ohm slider pot = $25.00 each X 1 = $25.00

Transistor = $10.00 each X 1 = $10.00

.47uF @ 100V film cap = $3.19 each X 1 = $3.19

1uF @ 35V Tantalum cap = $0.43 each X 4 = $1.72

22uF @ 16V tantalum cap = $1.72 each X 1 = $1.72

10uF @35V tantalum cap = $1.05 each X 4 = $4.20

3.3uF @25V tantalum cap = $1.16 each X 2 = $2.32

250uF @ 50V electrolytic cap = $3.42 each X 2 = $6.84

Key Contacts $0.00

PARTS TOTAL= $101.49

Labor = $30.00 an hour X 13 hours = $390.00"

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