smokinone
Active Member
The rails need some kind of lubricant on them, either oil or grease. Light machine oil works best on most players. Clean the rails and lube them as detailed in this thread. Oil the top bearing of the spindle motor.
Check for scraping noises when the troublesome CDs play. Thinner CDs will sometimes cause the chuck to rub on the support bracket.
The best way to check the laser is by using an oscilloscope to view the rf waveform. The electronic adjustments could be off but you need a scope to perform them. This is a Toshiba mech and pickup, NOT Sony. They never were very good.
Thanks for the info sir. I will have to see how to access the spindle motor when I get back in. I did download the manual and it shows disassemble procedure.
I have ordered some replacement electrolytic caps to recap the unit. I purchased Nichicon audio grade KT and KA depending on available values for the series. Bipolar caps I will use MP and US series.
When I get it back apart I will lube the rails. I have some Teflon GEL lube I can use. I do have a scope (Tektronix 2235), but wouldn't know where to look, or what to look for. I'm not really proficient with it, just used it to peak radios. I have played several more CD's since the post, some of recent purchase to see if maybe they wouldn't play due to the reflection of the newer CD's being less? At any rate, all have played flawless. I'm almost of the opinion that the Stones CD is a bootleg possibly made on a CD-R which I don't think will read on the older players? It doesn't show any signs of recognition. I polished the Zeppelin CD with some NOVUS fine scratch remover and it still skips in the exact same spot. When prompted to the next song, it plays it just fine. It does have some weird marks on the underside of the CD, but it also does play on the NAD.
When I had it apart, I played or ran the Stones CD and another and it was very smooth and no noise on the one it recognized, but the Stones it just spun a little and then stopped, like no info on the CD.
I might ad it does sound very nice to my ears playing through the R-1050.
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