well , i shouted "hurrah" before testing the analog part .....variable output works fine , but fixed output does not work , plus when i touch the xlr fixed output with the rca`s connected on the fixed output i hear some mass loss noise ......the fixed output is on a permanent mute condition .....any advice here ?? |
Congratulations ! I hope you like the sound, after all that work, personally i know how satisfying it is when that damned thing is working again ! |
well , put my hands on the krell , rf amp and spindle driver`s transistors cold solderings , a new belt and 4 220 uf capacitors from the preamp section replaced , made my unit to sing again !! laser was in nice cond , i have bought an optima unit that i will have as a spare just in case , now it`s the time for a couple Phase linears i have here , waiting for white oak components |
i will try to get ahold of him ! thank you ! |
His name is Ruben, his Audiogon name is serraniruben, try sending him a message, maybe he can help. But it's been 9 years ! |
Argentinean ......do you know his name ?? Bruno maybe ? i am from Argentina too , Lol !!
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Maybe, try searching the net, i bought my lasers of a Argentinien guy here on Audiogon 9 years ago, and one from a vendor on ebay, but i don’t see any for sale at this moment. My ebay purchase history does not go far enough back to be helpful, sorry ! |
where can i get the laser ?? aliexpress ??
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Probably laser, or/and servo control board problem, time for a specialist, my guy is in Sweden ! There is a good guy in Holland too.
If you want to try yourself, next step would be replacing the laser head, but it is really easy to mess up a new laser if you don't know what you are doing. |
it still does not operate , laser still keeps going up and down making a "click click click" sound all the time |
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Click on my user name, and send me a private message. On the Krell : Go into the menu,by pressing “Menu” turn the volume dial until it says “Cover” then press menu again, and turn the volume dial again until it says “Off” ( it gives you the other options “auto” and “ auto play”) exit the menu function by pressing “ menu” 2 times. Now try if it will operate ! |
have you got an email so i can send you pics and vids ?? |
Normally the disc spins if the clamp is in place, even if the laser is not working properly it will try to read TOC. What happens if you try starting it with no clamp ? Does it say “no clamp” in the display ? There is a sensor connected to the lid mechanism and clamp sensor connected to the main board with a fragile cable and connectors, you have to carefully disconnect this before being able to remove the top section, maybe it is torn ? Go into the menu and find the auto play feature and set it to off so it is not depending on the lid sensor, you want it working manually!
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Power source is working ok , display is ok also , i didn`t test the DAC and the pre , but that is not a concern to me ....
once i push the power button , the CD player laser makes a big shake , then starts to move up and down ( clicking) 20 times , then 1 time to the rear , then 20 ups and downs and one to the rear , and so on ....disc does not turn , i have also moved the pulley to move the transport to the rear , but when power is on , laser makes a but shake "clack noise" , then it starts "clicking in the position i left it , no displacement at all , belt is ok , worm is lubricated.......
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What part is working ? It has 3 separate parts, drive, d/a converter and class a preamp. The dac is probably not working and if it is the 20 bit version will likely not work again, those dacs are almost impossible to locate. In the preamp section, the heat has most likely destroyed some of the capacitors, but that is easily fixed by any decent repair shop, remember to order the most heat resistant replacement capacitors. If the laser in the drive is not reading the CD, it can be replaced, the chinese started making that laser again, and it can be found on ebay. Sometimes the rubber belt driving the laser head get brittle and needs replacing, and the metal track the laser moves on definitely need lubrication with a thin mineral oil. All parts of the Kps 25sc can be connected separately if they work, you probably need a separate dac, the drive section is a JVC pro drive, one of the best ever made. I’m using mine into a Yggdrasil dac these days.Good luck ! |
If it has analog outs, it should play through a conventional power amp. If it has digital outs then it should connect to a DAC. Having never owned one that is my humble contribution. |
