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Philips CDI 605 Capacitor Replacement Guide

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Philips CDI 605T CD panel component layout
CD panel parts list and component side layout of the CDI 605T (service manual p. 19)

The Philips CDI 605 has electrolytic capacitors on its CD panel, its power supply, its MMC panel and its smaller panels. Philips' service manual for the tray-loading CDI 605T gives the values for the CD panel, the control panel and the expansion panel FMV, because those boards changed for the 605T; the values below are read from its circuit diagrams.[1] The power supply, MMC, APU and video encoder panel diagrams are in the separate CDI 605/00/05/17 service manual (4822 725 24083), which is not among the manuals ICDIA hosts, so no values for those boards have been published.[1][2] The CD panel drawing covers several Mini MMC players at once; notes on it mark parts fitted only to the CDI 205, 910, 603, 610 or 220/00, and parts fitted only to caddy or only to tray loaders.[1]

Visual inspection

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  • Look for bulging tops, electrolyte on the board and corrosion around the capacitor legs and nearby vias. See Capacitor Failure Symptoms.
  • Philips' CD panel parts list identifies 2501 and 2502 as bipolar electrolytics; they must be replaced with bipolar parts.[1]
  • Check the Digital Video board while it is out. The 605T at retrostuff.org had two SMD ceramic capacitors (2307 and 2433) missing from its 22ER9424 board.[3]

CD panel (1004)

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The CD panel (board 3104 103 2836) carries the drive servo and decoder, the KILL mute circuit, the headphone amplifier and the supply branches for the analogue circuits.[1]

CD panel electrolytics (605T service manual, CD part 1 and CD part 2 circuit diagrams)
Ref Capacitance Voltage Where the diagram places it
2107 33 µF 16 V −5 V branch, after 3104 and Zener 6103
2113 47 µF 25 V Laser supply circuit beside transistor 6102 (BC338)
2122 33 µF 16 V Vref, pin 20 of the radial processor 7121 (TDA8809)
2140 470 nF 50 V Output of the radial driver 7151 (TCA0372); drawn with a different symbol from the polarised parts
2201 33 µF 16 V Supply of the drive processor 7201 (MC68HC05C8), after 3209
2307 2.2 µF 50 V Phase detector output, pin 29 of the decoder 7301 (SAA7310)
2308 33 µF 16 V Supply, pin 28 of the decoder 7301
2310 33 µF 16 V Supply of the RAM 7302 (MN4264)
2314 33 µF 25 V Supply, pin 16 of the ADOC 7310 (PCF3523)
2501, 2502 22 µF 10 V Audio path from the APU; bipolar, Philips part 4822 124 41738
2621 47 µF 25 V +12VA branch, after 3621
2622 47 µF 25 V −12VA branch, after 3622
2623 47 µF 25 V +5VC branch, after 3620
2630 10 µF Not marked KILL mute circuit
2631 1000 µF 16 V KILL mute circuit, after diode 6622
2632 47 µF 25 V KILL mute circuit, on +12VA
2681 2200 µF 25 V Across the supply pins 8 and 4 of the headphone amplifier 7651 (NJM4556)

[1] The location grid on page 19 of the service manual gives the board square for each reference.[1]

Control panel and expansion panel FMV

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Other electrolytics in the 605T supplement
Board Ref Capacitance Voltage Where the diagram places it
Control panel 1005-D 2101 22 µF Not marked Supply of the infra-red receiver 6101
Expansion panel FMV 1007 2002 100 µF Not marked Input of the −5 V regulator 7002 (MC7905), on −12 V
Expansion panel FMV 1007 2003 100 µF Not marked Output of 7002, on −5 V

[1] Where Philips gives no voltage, read the rating from the part on your board and fit at least the same.

Boards without published values

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For the power supply (assembly 4822 214 51993), the MMC panel, the APU panel (4822 214 51849) and the encoder panel (4822 214 51992), record each electrolytic before removing it:[1]

  1. Photograph the board from both sides before any work.
  2. Note the reference, capacitance, voltage, diameter, height and lead pitch printed on each part, and which side the negative stripe faces.
  3. Replace one capacitor at a time with the same capacitance and the same or a higher voltage rating, and check the height under the tray and the extension riser.
  4. In the power supply, treat the large filter capacitor as charged until you have measured it; retrostuff.org warns that these can give an electric shock if not discharged.[4]

Procedure

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  1. Take the CD panel out by Philips' route: cover, bottom plate, support bracket, tray loader, then the CD panel's five screws, with the APU, encoder and emulator panels unplugged. The full order is on the Philips CDI 605 General Maintenance page.[1]
  2. Desolder each capacitor and clean the pads. Fit the new part with the polarity shown on the layout, and fit 2501 and 2502 as bipolar parts.
  3. Check the supply branches after reassembly: −5 V, +5VB, +5VC and ±12VA on the CD panel, as listed on the Philips CDI 605 Troubleshooting Guide.
  4. Play Testdisc 5 and repeat Philips' CD panel checks.[1]
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References

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  1. ↑ 1.00 1.01 1.02 1.03 1.04 1.05 1.06 1.07 1.08 1.09 1.10 Philips Interactive Media Systems Service & Support, Service Manual CDI 605T/20/37, service code 4822 725 24695, cover imprint W.L.0993: cover note and contents (PDF pp. 1–3); connections and controls, section 2.2 (PDF p. 4); test discs, service tools and central repair items, sections 3.5 and 3.6 (PDF p. 12); exploded view and demounting chart, section 4.1 (PDF p. 13); cabinet and tray loader 915 parts lists, sections 4.1.1 and 4.2.1 (PDF p. 14); overall block diagram, section 6.1 (PDF p. 15); CD panel circuit diagrams, layouts and parts list, sections 6.4.1 to 6.4.4 (PDF pp. 18–21); extension panel FMV, section 6.6 (PDF pp. 22–23); CD panel measurements, section 7.2.2 (PDF p. 24); extension 22ER9132/40 specification, section 8.2 (PDF p. 25). Hosted here as File:Philips CDI 605T Service Manual.pdf.
  2. ↑ CD-i Service Manuals, The New International CD-i Association—link(accessed 2026-10-20) Row CDI 605T: Mini-MMC board, diagrams shared with the CDI 605, 603 and 610.
  3. ↑ Philips CDI605T Disassembly and Repair, retrostuff.org, 7 August 2019, revised 24 May 2025—link(accessed 2026-10-20) Owner's disassembly and repair of a CDI 605T/20: extension cards, tray belt and grease, Timekeeper replacement, fan, floppy drive, DVC capacitors, board photographs.
  4. ↑ Philips CD-i Power Supply Units, retrostuff.org, 29 September 2024, revised 10 July 2026—link(accessed 2026-10-20) Section "Maxi MMC / Mini MMC" and the general warning on filter capacitors.


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