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Philips CDI 740 Capacitor Replacement Guide

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Philips CD-i Mono IV main panel component side (CDI 220-80 service manual)
Component side of the Mono IV main panel (CDI 220/80 service manual), the board family used in the 740

No capacitor list for the Philips CDI 740 has been published. Philips' service manual for the 740 has not been found, and retrostuff.org reports that there is no service manual for its 20PS308 power supply.[1][2] The player contains the supply, a front display panel, a Digital Video cartridge, the CDM 12.1 mechanism and a large Mono IV main board, as Coffee Fueled Retro's strip-down photographs show.[3]

Main board

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ICDIA lists the 740 among the players whose diagrams are in the Mono IV service manuals.[1] The published main panel parts list for the board family is in the CDI 220/80 service manual: 29 capacitors of 1 µF and above, from 1 µF 50 V to 1000 µF 6.3 V, fourteen of them 47 µF 25 V.[4] The full list with positions and Philips part numbers is on the Philips CDI 660 Capacitor Replacement Guide. It is the 220/80's list: the 740 has the 32 KB NVRAM circuit, which the 220/80 does not, so check each position on your own board before ordering.[5][6]

Power supply (20PS308)

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The 20PS308 is the internal supply of the CDI 740: European version 3122 427 20283, 100–240 V input through an IEC C8 inlet, a T1.0A mains fuse (1101) and two MP315 fuses (1215, 1216) on the +5 V side. Its outputs are believed to be +5 V, −5 V and +12 V, but retrostuff.org has not confirmed them or the pinout.[2] Its capacitor values are not published. Photographs of the supply taken by Coffee Fueled Retro's author appear in retrostuff.org's power supply article and in the Coffee Fueled Retro gallery.[2][3] Unplug the player and leave the power switch on for a while before opening the supply, and treat the large filter capacitors as live until you have measured them.[2]

Front panel and Digital Video cartridge

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Neither the 740's front display panel nor its built-in Digital Video cartridge has a published parts list. Note each capacitor's value, rating and polarity from the part before removing it.

For signs of failure, see Capacitor Failure Symptoms.

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References

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  1. ↑ 1.0 1.1 CD-i Service Manuals, The New International CD-i Association—link(accessed 2026-10-20) Rows CDI 210, CDI 220 and CDI 470: the Mono-IV manuals, whose diagrams are shared by the CDI 210, 220, 470, 615, 740 and the B&O players.
  2. ↑ 2.0 2.1 2.2 2.3 Philips CD-i Power Supply Units, retrostuff.org, 29 September 2024, revised 10 July 2026—link(accessed 2026-10-20) Sections "20PS307" and "20PS308", and the general warning on filter capacitors.
  3. ↑ 3.0 3.1 Gallery: Philips CD-i 740, Coffee Fueled Retro, 18 March 2024—link(accessed 2026-10-20) Photographs of a complete strip-down of a CDI 740/00, with the label data.
  4. ↑ Philips Interactive Media Systems Service & Support, Service Manual CDI 220/80/85/97, 4822 725 24774, imprint P.S. 0995: survey of players and main panels (PDF p. 1); contents, including the sections on servicing surface-mounted devices (3.2) and handling static-sensitive parts (3.3) (PDF p. 2); technical specification of the 220/80 (PDF p. 3); central repair procedure, section 3.5 (PDF p. 11); exploded views, sections 4.1 and 4.2 (PDF pp. 12–13); low-level test and error codes, section 5.1 (PDF p. 14); service shell, section 5.2 (PDF pp. 15–16); key components, section 6.1 (PDF pp. 17–18); troubleshooting and repair, sections 6.2 and 6.2.1 (PDF p. 18); main panel layouts, section 7.5 (PDF p. 25); main panel measuring pads, section 7.5.7 (PDF p. 30); main panel parts list, section 8.4 (PDF pp. 36–37). The scan passes from section 6.2.1 straight to section 7.1, so sections 6.2.2 to 6.3 are missing. Hosted here as File:Philips CDI 220-80 Service Manual.pdf.
  5. ↑ Modifications for Philips CD-i Players, retrostuff.org, 12 January 2020, revised 2024—link(accessed 2026-10-20) Sections "Mono IV (large players)", "Brooktree BT9106 & BT9107 / BT9108" and "ROM/Software modifications".
  6. ↑ NVRAM+RTC Solutions for Philips CD-i Players, retrostuff.org, 31 December 2021, revised 25 November 2025—link(accessed 2026-10-20) Section "32 KB (SmartWatch)": the DS1216C socket, its batteries and replacements.


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