Does anyone have a service manual for the Yamaha CDX-630E? I'm unable to find one on the usual sites.
I fixed this Yamaha and it seems to my ears to be a really good sounding player, certainly it sounds better to me than other TDA1541 equipped players that have the Philips chipset - this one has a Sony chipset. I expect it's because it doesn't have the SAA7220 and it's noise issues.
I haven't made any substantial mods other than my usual upgrade of the power supply arrangements by ripping out the fixed power leads and installing an IEC 3-pin socket and a Schaffner noise filter. The caps in the PSU are bigger - they were a 2200uF and a 1500uF, I replaced them with a 6800uF and 4200uF, not sure if this has made nay difference, but this thing has really good bass now, don't know what it was like before as it didn't work. The other caps in the PSU section are now 1000uF and 470uF whereas before they were 220uF and 470uF, just using up what caps I had in my stash and I figured when it comes to power supply, a bit bigger would be fine.
I also replaced all the small electrolytics throughout the player and the green ceramic disk caps - cheap, nasty things that they are. I used a mix of polyester, polypropylene, tantalum and a few OSCONs and Philips orange aluminium electrolytics. I don't know if any of this has improved the sound, but I am very happy with how it sounds and apart from the OSCONs and the big caps in the PSU, none of these new caps will dry out over time.
I haven't made any substantial mods other than my usual upgrade of the power supply arrangements by ripping out the fixed power leads and installing an IEC 3-pin socket and a Schaffner noise filter. The caps in the PSU are bigger - they were a 2200uF and a 1500uF, I replaced them with a 6800uF and 4200uF, not sure if this has made nay difference, but this thing has really good bass now, don't know what it was like before as it didn't work. The other caps in the PSU section are now 1000uF and 470uF whereas before they were 220uF and 470uF, just using up what caps I had in my stash and I figured when it comes to power supply, a bit bigger would be fine.
I also replaced all the small electrolytics throughout the player and the green ceramic disk caps - cheap, nasty things that they are. I used a mix of polyester, polypropylene, tantalum and a few OSCONs and Philips orange aluminium electrolytics. I don't know if any of this has improved the sound, but I am very happy with how it sounds and apart from the OSCONs and the big caps in the PSU, none of these new caps will dry out over time.
