Can we assume you've cleaned the laser lens - either via the use off a lens cleaning CD or by taking it apart and using a Q-Tip dampened with isopropyl alcohol?

Ahem :embarrassed:, I have thought about that but because it has worked I haven't done that. I don't have the CD thing, can you explain how to take it apart??

Let's see if I remember.   Loosen (don't remove) the two screws on either side in the back and slide up the two small brackets that secure the top to the bottom base.  Then tighten the screws just enough to hold the two brackets in the 'up' position.   Then slide the top back slightly by moving it toward the back of the deck.  Then lift off.   

LOL, I thought you meant take the laser apart. I'll give the lens a wipe and see what happens.

Silly question, should it play with the cover off?

Yes.

Cheers. MediaBob

Ok, gave the lens a wee clean but still have a problem.

Just wondering if there is a way of determining a physical problem with the circuit board? I do have a multimeter so can measure voltage, are there any easy points I can measure?

Tony

More than 90% of the faults to these decks are caused by bad capacitors on the servo board and you already
replaced those.
First check your work. Caps properly soldered?
Correct values and polarities?
No circuit board copper traces damaged?
Check the seating of the ribbon cable from the laser block to the servo board.
It has to be locked in correctly in the socket.
Check also for cracked solder joints to the main circuit board, particularly in the power supply and voltage
regulator areas.
Some board versions have a large connector along the left edge that is prone to crack its solder joints.

Martin

Caps are good values, came from yourself ;-) Soldering seems ok, but will triple check.

I take it, when you say 'left edge' of the board, that's when I'm looking at it in it's normal position i.e. component side down?

tony