Sur un forum anglais (http://www.diyaudio.com/forums/digital- ... r-out.html) il était conseillé de changer la valeur de ces diodes.
Extraits de la discussion :
I've repaired quite a few early planets with this fault. The cure is to replace the 4 (four) 1n4003 rectifier diodes making up the bridge of the main +/- 12 v power supply. These are located near the main power switch and the green fuses near there. I replace them with better fast rise time shottky diodes. Check the security of the filter caps solder joints while you're in there, better yet, replace with higher quality versions.
Up to you, changing the diodes is easy. 1N4003 are a standard 1 amp rectifier. Use 1N4004 get them anywhere, or BY127 or BY133.
You can remove them by just snipping each one out ( make note of which way round first) and with tweezers unsolder each bit of wire left in the board. Look for any joints that appear "dull" and cracked. The filter caps are those blue? cans next to the diodes. Check for dry joints on what looks like a regulator ( thing on a metal heatsink )
I had the same problem with my Rega plannet last year and I had to stop using it finally, Tried to contact Rega to repair the CD witout any luck. Tried few specialist Hifi dealers and answer was at leat this will cost £100 minimun just to send it to Rega for repair.
I tried your instructions as above and replaced the 4 diodes IN4003 from Maplin ( Only costs 64P for all 4) and here we go, it works briliant now.
Mes questions :
- quelle valeur mettre ?
- quelle qualité de composant choisir (si différences audibles) ?
- où les acheter ?
Précision, je ne connais rien à l'électronique, mais la manipe semble être à ma portée.
Merci pour tout conseil et information
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