Just have to click on it ("this diode"). I didn't want to have a commercial website clearly visible (though of course I've got no interest in any company of that kind)
Good day. Sorry I haven't been here for a long time but I was collecting parts for Wadi 16. And I almost got it working. There are two problems, there is a short circuit at the output, the relays are shorted to ground and Mute lights up on the panel, after desoldering and checking the coils are good. And the second problem is that the engine doesn't turn, the laser lights up. I kindly ask for advice. Thank you.
There is a fair chance that this is not a fault.
Wadia 16 is designed to work straight into a power amplifier and when turned on, it mutes the output. Use volume control on the remote to increase the level and that mute diode should disappear and in turn a column of level indicating diodes will light up.
I have seen a owner of a very respected audio workshop in Perth being caught on that.
Without laser power meter you will not be able to find out is the laser power is of sufficient level for the servo to turn the motor on.
The motor itself can be easily tested by applying 3V DC to its terminals.
What you should also check for is:
- With power off, does the laser head travel freely on its magnetic rails?
- When the player is turned on, does the laser head travel to the centre of the CD? If not, push it with your finger
- Does the VRDS disc that clamps the CD spin freely (when CD is loaded and should be playing)
- Are limit switches clean? If the servo does not know that the CD is in place and is clamped, it will not start the motor
Cheers
Roman
Can't say better than Roman.
Point 1 is both easy and tricky. Sometimes I get myself caught on this... First thing to try.
Cross fingers on point 2. You say that the engine doesn't turn, mean that CD is not spinning -at all? never?
😎
Point 1 is both easy and tricky. Sometimes I get myself caught on this... First thing to try.
Cross fingers on point 2. You say that the engine doesn't turn, mean that CD is not spinning -at all? never?
😎
For the CD to spin, there is a number of things that have to happen.
These can be a bit different in different players.
But what is a must, servo must know that:
In high end players, it is usually one attempt and if there is no success for some reason, the whole thing is abandoned.
These can be a bit different in different players.
But what is a must, servo must know that:
- the tray is in (limit switch activated)
- the CD is there (beam reflection)
- CD is clamped (sometimes another limit switch, sometimes not)
In high end players, it is usually one attempt and if there is no success for some reason, the whole thing is abandoned.
Dziękuję za odpowiedzi. Jutro to złożę i spróbuję uruchomić i nagrać filmik z działającym laserem. Wymieniłem 4 x pcm1702 6 x OPA604 6 x BUF634 2 x MIC2951 4 x NJM7812 i 7912 4 x 7805 i 7905 4 rezystory 620 ohm 8x dioda TVS 8x kondensator przelotowy. Prąd płynął przez XLR i RCA z KRELL KSA-300S. Pan powiedział, że wszystkie jego tranzystory się przepaliły.
Attachments
Of course the board will be cleaned, the original capacitors and resistors will be installed, the ones with 10 ohm stabilizers. The board was tested without relays, and the offset is regulated by setting 0 mA. After soldering the relays I will let you know if it disconnects from the remote control. Thank you
If the repair guy said that the current source for this catastrophic failure came from Krell KSA-300S, then there surely must be some kind of incompatibility between the two. Either grounding on either one was non standard, or the XLR balanced cables were in some way non-standard. Say negative was connected ground or cold or maybe some kind of XLR to RCA adaptor was used.
I did connect my Wadia 16 straight to the Electrocompaniet AW-100DMB and it worked fine. Because Wadia recommends it as a preferred way of connecting the 16 to the system, I had to do it as a test to see if it was indeed beneficial not to use pre-amplifier. In my opinion it was not, and an EC-4 pre-amp is now used, but certainly there was no fire in either component with the direct Wadia 16 to power amp connection.
Translation.Hello the dac board is working thank you for your reply. Wadia mutes itself on remote control three buttons PLAY AND LEVEL did not work after making remote everything works relays unlocked. Still does not work motor I bought a Denon Cd with working laser I swapped and still nothing switches checked. Please help.
Hi @tolas123 , I find it difficult to read sentences without any punctuation... sorry for that. As English is not my mother tongue, it's more difficult to understand what you really mean unless you're clearer at describing precisely what problem you encounter when you do this or that.
Can you tells if the remote works, if the machine works and what it doesn't do. At present I understand that the only problem is coming from the motor not turning. Is it correct?
Can you tells if the remote works, if the machine works and what it doesn't do. At present I understand that the only problem is coming from the motor not turning. Is it correct?
The first thing I'd do (I don't recall if you did, sorry if I'm repeating myself), would be to test voltage on the motor connexions?
By the way, does the laser moves? 1) on its rail, back and forth when you light the W16 on and off ; 2) up&down around 3 times when you light the reader on and no disc in.
And by the way once more, does the player read the TOC?
By the way, does the laser moves? 1) on its rail, back and forth when you light the W16 on and off ; 2) up&down around 3 times when you light the reader on and no disc in.
And by the way once more, does the player read the TOC?