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Magnavox Odyssey 100 Capacitor Replacement Guide

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Magnavox Odyssey 100 YF7010 board layout (SM 6503)
Component view of the YF7010 (Odyssey 100) board, with every capacitor position labelled (Magnavox Service Manual No. 6503, p. 6503-7)

The Magnavox Odyssey 100 (YF7010) has twelve electrolytic capacitors on its single board. Magnavox's Service Manual No. 6503 prints them on the YF7010 schematic and gives each one's value, voltage rating and part number in the master board parts list, and the component-side drawing of the board shows where they sit.[1][2][3] For failure signs in general see Capacitor Failure Symptoms.

Before replacing anything

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The console runs from six C cells or a 9 V adaptor, so there are no mains voltages inside it.[4] Magnavox's documents name no capacitor as a known fault. Check the supply first: +9 V at W1 and 4.5 V to 5.5 V at IC1 pin 3.[4][1] The three faults Nerdly Pleasures found on an Odyssey 100 in 2022 were cured by adjustment and by cleaning switches, without replacing a component; see Magnavox Odyssey 100 Troubleshooting Guide.[5]

Electrolytic capacitors

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Odyssey 100 (YF7010) electrolytic capacitors
Ref Value Rating Magnavox part no. Circuit (schematic) Beside (board drawing)
C1 470 µF 16 V 270109-5215 9 V supply from the power switch, before L3 (68 µH) and IC1 pin 2 See note below
C2 470 µF 16 V 270109-5215 9 V supply, with C1 Battery terminal W2
C9 220 µF 16 V 270109-2215 Regulated 5 V line from IC1 pin 3 See note below
C10 22 µF 10 V 270109-2110 IC1 pin 8, with R12 (100 kΩ) Lower rebound control R10
C11 22 µF 10 V 270109-2110 IC1 pin 4, with R13 (100 kΩ) Upper rebound control R8
C44 2.2 µF 50 V 270109-2050 IC2 pin 3, right player horizontal control R41 Right player horizontal control R41
C45 2.2 µF 50 V 270109-2050 IC2 pin 14, left player horizontal control R43 Left player horizontal control R43
C46 2.2 µF 50 V 270109-2050 IC2 pin 5, right player vertical control R45 Right player vertical control R45
C47 2.2 µF 50 V 270109-2050 IC2 pin 12, left player vertical control R47 Left player vertical control R47
C52 10 µF 25 V 270111-1125 IC3 pin 5, the ball control input IC3
C56 47 µF 16 V 270111-5115 IC3 pin 3, with the Speed control R51 Speed control R51
C65 10 µF 25 V 270111-1125 IC5 pin 6, fed through R72 (47 kΩ) Left player horizontal control R43

[1][2][3]

Values, ratings and part numbers are from the parts list. Magnavox's documents disagree on C1 and C9: the YF7010 schematic marks C1 as 220 µF and C9 as 470 µF, the parts list gives C1 470 µF and C9 220 µF, and the board drawing labels the two large capacitors beside the battery terminals C2 and C9. All three are rated 16 V in the parts list. Read the values on the parts fitted and replace like for like.[1][2][3] The parts list also warns that replacement parts may differ in value from the factory part.[2]

The parts list includes C12, C19, C62, C68 and C73 as well; these belong to IC4 and IC6, which Magnavox lists as not used in the YF7010, and they appear only on the YF7015 (Odyssey 200) schematic.[2][6][7]

Other capacitors

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The rest of the capacitors are film, polystyrene and ceramic parts. Unlisted capacitors are 10 %, 500 V types unless the schematic says otherwise.[2] Two groups need care if they are disturbed:

  • The timing capacitors for IC1, IC2 and IC3 (C3, C4, C40 to C43, C48 to C51) have values that depend on the IC group fitted; see the main page.[1]
  • The RF section around Q1 and Q2 uses NPO ceramic capacitors and a 3–15 pF trimmer, C24, which sets the oscillator. Leave it alone during a recap.[2][1]

Procedure

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  1. Take out the cells and unplug the adaptor.
  2. Open the console: bottom cabinet, cardboard shield, then the screws holding the board and the six knobs, as described on the maintenance page.[8]
  3. Photograph the board and note the polarity of each capacitor before removing anything.
  4. Fit capacitors of the same value and at least the same voltage rating as the parts list gives.[2]
  5. Clean off flux, refit the board and knobs, and check +9 V at W1 and 4.5 V to 5.5 V at IC1 pin 3.[4]
  6. Check the picture and repeat the frequency, blanking and rebound adjustments if needed.[9]
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References

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  1. ↑ 1.0 1.1 1.2 1.3 1.4 1.5 Magnavox, Service Manual No. 6503, February 1976, pp. 6503-5 and 6503-6: YF7010 schematic diagram, with the timing capacitor table and the antenna switch box. Hosted as File:Magnavox Odyssey 100 and 200 Service Manual 6503.pdf.
  2. ↑ 2.0 2.1 2.2 2.3 2.4 2.5 2.6 2.7 Magnavox, Service Manual No. 6503, February 1976, p. 6503-12: master board replacement parts list (coils, capacitors with type, value, rating and part number, controls and switches, semiconductors, miscellaneous) and cabinet replacement parts list. Hosted as File:Magnavox Odyssey 100 and 200 Service Manual 6503.pdf.
  3. ↑ 3.0 3.1 3.2 Magnavox, Service Manual No. 6503, February 1976, p. 6503-7: YF7010 main P.C. board (component view), board 210996-1. Hosted as File:Magnavox Odyssey 100 and 200 Service Manual 6503.pdf.
  4. ↑ 4.0 4.1 4.2 The Magnavox Company, Service Manual No. 6503: YF7010 & YF7015 Odyssey, first issue, February 1976, p. 6503-1: general information (6 C cells or an optional AC to DC 9 V adaptor; the YF7010 has two games, mechanical scoring and two players; the YF7015 has three games, electronic and mechanical scoring and two or four players with Tennis and Hockey) and the specifications table. Hosted as File:Magnavox Odyssey 100 and 200 Service Manual 6503.pdf.
  5. ↑ Nerdly Pleasures, "Sears (Atari) Tele-games Pong vs Magavox Odyssey 100 - Battle of the First Pong Consoles", 7 August 2022 (retrieved 2026-10-19), sections on the Odyssey 100 and 200, "Quirks of the Odyssey 100" and "Issues Encountered with the Odyssey 100": the battery compartment and its coin screw, the AC adaptor plug, the battery snaps, the RF cable, the internal adjustments, and the owner's repairs. Owner's hands-on report.
  6. ↑ Magnavox, Service Manual No. 6503, February 1976, p. 6503-4: YF7010 and YF7015 voltage charts for IC1 to IC6 and transistors Q4 to Q7 and Q9 (taken with a VTVM, game switch at B, players switch at 4, sound on, players centred, ball volleying), with notes 1 to 16, and the IC basic functions (IC4 and IC6 not used in the YF7010). Hosted as File:Magnavox Odyssey 100 and 200 Service Manual 6503.pdf.
  7. ↑ Magnavox, Service Manual No. 6503, February 1976, pp. 6503-9 to 6503-11: YF7015 schematic diagram, with regulator Q9, IC4, IC6, the player select and score reset switch S2 and the timing capacitor table. Hosted as File:Magnavox Odyssey 100 and 200 Service Manual 6503.pdf.
  8. ↑ Andrew Bookholt, "Magnavox Odyssey 100 Teardown", iFixit, guide 3531, 2010 (retrieved 2026-10-19), steps 3 to 6: the screw holding the bottom panel, the cardboard shield, the six-C-cell battery holder, the adjustment potentiometers, the screws holding the board to the upper case, removing the six knobs, and the single-sided board with the RF modulator, buzzer and Texas Instruments ICs.
  9. ↑ Magnavox, Service Manual No. 6503, February 1976, p. 6503-2: typical operation (Tennis), the electronic scoring marks of the YF7015, and the service adjustments with Figure 1 (blanking). Hosted as File:Magnavox Odyssey 100 and 200 Service Manual 6503.pdf.


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