Linn AV5103

Not sure if this is the correct place to Post this but our next patient is a Linn AV5103. Was working fine for many years as part of an all-Linn system but just stopped working recently!


Symptoms - " ... when the power is switched on the display fades in and out but also recently noticed a recurring clicking noise as the display fades?" Anyone seen this with an AV5103 or similar - any feedback would be welcomed.


Don't suppose anyone has access to a circuit diagram/schematic for the AV5103?
 
I understand that the 5103 uses the same 'Linn Slimline' PSU as the Wakonda, Kairn, Karik, Ikemi etc. - it does not have the 'Linn Brilliant' PSU.


5103.JPG


Anyone have a circuit diagram/schematic for this PSU?




 
I've managed to coax some life from this 5103 but in common with a number of 5103s being sold for Parts/Repair it now has the following problem:-

'Seems to be stuck on the screen as seen in pics and none of the buttons can change it' - image attached.

What's the problem here and can it be fixed?

5103_Stuck.JPG
 
Hi, I’m new to the forum and you may well have solved the problem. But, if you haven’, the stuck screen is likely to be dirty/non conductive button surfaces behind the screen. If you take it out of the case and remove the two screws holding the screen on you can get to the back of the buttons as wells as the PCB they contact. A good clean with IPA to both buttons and PCB cures it. If not, try painting the button backs with conductive silver paint. Make Sue you let it dry thoroughly otherwise you‘ll make the problem worse.
I‘be two 5103 and it worked a treat with those..

The intermittent starting is usually the PS. Situated in the back right area, an enclosed metal box’ take it out and recap it with 105* caps (I think they are 0.47uF from memory but that may be well wrong). There’s about six of them, all the same value. It just gets too hot and eventually buggers the caps.

Good luck.
 
Thanks Linnovice for the information but as you anticipated I have cleaned the buttons and contacts with IPA which improved performance dramatically. I've also bought some conductive paint and will apply this as a longer term solution. I note the importance of drying times to ensure that I don't make things worse!

All the caps on the PSU board were replaced as were quite a number of the SMD caps on the main power board. I also had issues with remote control and standby functionality but these were traced to a faulty op-amp and FET.
 
Hello Donald
Did you ever found a schematic for the psu? I'm trying to repair mine and aside from recapping it as you mention the are a bunch of parts burnt out, such as rectifying diodes, inductors and probably the main transformer. Any info you've gathered on the av5103 and the psu will be very helpful on my journey to try and make it work again.
 

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