The KI tx is connected up two ways, one way works on some pcbs and not on others. You will have continuity before the fuses as you are measuring the resistance of the transformer winding.
Measure DN01 02 03 04 for shorts also
Brent
Measure DN01 02 03 04 for shorts also
Brent
After that you need to check QM01 Q106 and Q105. One of these could have failed. Remove all the connections to the mech. Test again and see if it blows a fuse
Brent
Brent
not sure how to check the servo chips, but I can tell you it's blowing the fuses without any connections, just a naked pcb out of the chassis. DN diodes all ok.
Jim
Jim
They are for the display control voltage (q851 854). 10K and 47K. This should not be causing you fuse blowing problem
Brent
Brent
Pin 9 to 15 on all three chips are connected to the -ve rail, measure this on each chip to gnd.
Pin 2 is for +ve and measure this to gnd on each chip
Brent
Pin 2 is for +ve and measure this to gnd on each chip
Brent
OK thanks. Will try checking all the pins on the servo chips tonight. Do I need to check them all from each to ground or across each other - the combinations could be mindblowing!
Jim
Jim
Ooops - keep cross posting.
Need to get to work so will check that tonight.
Thanks for all the help - dunno what I'd do without you.
Aaaahhhhh!
Jim
Need to get to work so will check that tonight.
Thanks for all the help - dunno what I'd do without you.
Aaaahhhhh!
Jim
Just been looking at that old debate, CD vs. Vinyl. The main bugbear with CD appears to be compression.
I was wondering how those Apple I pods compare, with their lossless audio format, which is suppose to be superior to CD. If you converted your Vinyl collection to this format, would that mean the IP is the next best thing to a turntable, rather than the CD?
Has CD had its day!!??
I was wondering how those Apple I pods compare, with their lossless audio format, which is suppose to be superior to CD. If you converted your Vinyl collection to this format, would that mean the IP is the next best thing to a turntable, rather than the CD?
Has CD had its day!!??
delphiplasma said:
No, sales are massive so it's not finished yet.
Ipods have a poor output stage and sound exceptionally poor, combined with a poor MP3 the sound is not possible to listen to (for me and others who've heard good sound).
The ideal, and this is the future, would appear to be high bit depth, high sampling rate uncompressed or lossless compressed downloads that future internet connections will make possible.
I personally hope there will be separate mass-market (ruined by LOUDNESS mastering) and audiophile/quality versions of future (and past) releases, where the audiophile ones are not over-compressed and are very high resolution. This will make CD players well and truly obsolete and offer better sound too.
Simon
Also bear in mind the not insignificant number of CDs in existence that will be good for another decade or three. I regularly snap up used bargains on Ebay for a £pound or two a time. When I move to a computer-based system these will be turned in to FLAC (lossless data compression format) and played through a network media player digitally feeding a high end DAC. The sound will be better than most CD players.
But until I can afford to do what I really want CDs are still pretty good!
Simon
But until I can afford to do what I really want CDs are still pretty good!
Simon
And as you know some older well recorded cds are being released on XRCD for that extra quality.
Jazz at the pawn shop on xrcd is a must listen, uber details
Brent
Jazz at the pawn shop on xrcd is a must listen, uber details
Brent
Or HDCD. Just a shame the Marantz can't decode that. The albums I have on HDCD sound fantastic on any player though.
SimontY said:
It's funny. Most old cd's sound terrible, but Roger Waters Pros & Cons from 1984 sounds fantastic even by todays standards. I can't understand where the problems began.
Lee.
I have had the Bluenote cd player back in for further upgrades, among more psu upgrades the customer asked me to fit some Mundorf Supreme Silver/Gold caps but still keeping the Audionote copper in oil. A second set of rca were fitted for the new caps.
The Mundorfs are so much cleaner and accurate than the copper caps, the audionotes sound grainy by comparison. I will defo be getting some of these in mine.
All I need to do now is work out what the smallest uF I can get away with as these caps are very expensive.
Brent
The Mundorfs are so much cleaner and accurate than the copper caps, the audionotes sound grainy by comparison. I will defo be getting some of these in mine.
All I need to do now is work out what the smallest uF I can get away with as these caps are very expensive.
Brent
delphiplasma said:
Aren’t you confused with digital compression (smaller file size) and audio compression (recording for maximum loudness)?
I doubt the man's confused, but I did skim over two types of compression previously: dynamic range compression (re. the "loudness wars" worsening over the 1990s and reaching a tragic peak now) and data reduction compression to reduce file sizes (lossy or lossless depending on the file type used).
When you combine the two on a digital radio or iPod, for example, the effect is truly devastating.
Simon
When you combine the two on a digital radio or iPod, for example, the effect is truly devastating.
Simon
Yes but he was referring to CD's (all of them 44kHz, 16bit). So according to me, there is not much wrong with CD itself (some good recordings proof that), the problem lie with "loudness wars" where some idiots can't figure out that hi-fi's have volume controls.
Andé
Andé