Hi all
I have been sent this CD player to return to working condition as opposed to sending it to the skip. It starts to play well enough, however, after a random amount of time it ceases to play, displaying a 0 as the track number.
Ejecting the CD and re-inserting it starts the player again. Once playing it has continued for over half an hour, skipping forward and backwards between tracks happily.
I serviced the mech, cleaned the microswitches, replaced the laser and belt. All things I've done many times on other players and with the notable exception of a couple, this has been all that was needed. Those that didn't work had a couple of 1,000uF/10V caps bulging, so I replaced those and voila!
Even though none of the electrolytic caps on the 5240 looked suspect, I replaced them all anyway. Still to no effect, the problem remains. I've also checked for excessive heat in the components after it fails and there is none.
When it is playing it sounds absolutely fine.
Any suggestions very welcome to bring this smart little player back to reliable life.
I have been sent this CD player to return to working condition as opposed to sending it to the skip. It starts to play well enough, however, after a random amount of time it ceases to play, displaying a 0 as the track number.
Ejecting the CD and re-inserting it starts the player again. Once playing it has continued for over half an hour, skipping forward and backwards between tracks happily.
I serviced the mech, cleaned the microswitches, replaced the laser and belt. All things I've done many times on other players and with the notable exception of a couple, this has been all that was needed. Those that didn't work had a couple of 1,000uF/10V caps bulging, so I replaced those and voila!
Even though none of the electrolytic caps on the 5240 looked suspect, I replaced them all anyway. Still to no effect, the problem remains. I've also checked for excessive heat in the components after it fails and there is none.
When it is playing it sounds absolutely fine.
Any suggestions very welcome to bring this smart little player back to reliable life.
I'll check the service manual but I don't remember seeing such a thing in the components list or inside the player itself.
Take out the control board that has the microprocessor and rework it yourself.
There is no rebailling for these appliances, hopefully they walk out, some put the plate inside the electric oven with a controlled temperature.
You have to slightly melt the faulty solder. Cover sensitive materials with aluminum foil to protect it from direct heat.
Typical " ecologic" brittle solder, lead free .......
There is no rebailling for these appliances, hopefully they walk out, some put the plate inside the electric oven with a controlled temperature.
You have to slightly melt the faulty solder. Cover sensitive materials with aluminum foil to protect it from direct heat.
Typical " ecologic" brittle solder, lead free .......
I did that with a Pioneer DV-520 and despite protecting the microprocessors it did not correct, the problem is maintaining the correct temperature for the melting point of the solder.
I don't know if you have a soldering iron with a special tip for rework (they are not expensive anyway), I would try a review of the solders before "going deep".
I don't know if you have a soldering iron with a special tip for rework (they are not expensive anyway), I would try a review of the solders before "going deep".
Well, it's been a while but I thought I would let you know how this went.
Firstly, I need to own up to a typo in the title of the thread. This is actually a 5420, not a 5240! This fix is specific to the former, not the latter.
So to remind folks, this had been a case of the playback intermittently skipping, despite having serviced the mech, including replacement of the drive belt and laser. I also changed all the electrolytic caps to be on the safe side, as this is a thirty year old machine and even some of the later models I've tackled had a couple of failed 1,000uF caps. Yes, C521BEE, you know who I'm talking about!
The answer lay in the server control chip, Q102 a Sony CXA-1082Q. I sourced one and used a heat gun to melt the solder and ping the chip off the board. I used my desoldering gun to clean all the contact tracks before fitting the new chip.
All fixed and the player is now working fine and running in its new Elna Silmic II caps in its new owner's system.
Firstly, I need to own up to a typo in the title of the thread. This is actually a 5420, not a 5240! This fix is specific to the former, not the latter.
So to remind folks, this had been a case of the playback intermittently skipping, despite having serviced the mech, including replacement of the drive belt and laser. I also changed all the electrolytic caps to be on the safe side, as this is a thirty year old machine and even some of the later models I've tackled had a couple of failed 1,000uF caps. Yes, C521BEE, you know who I'm talking about!
The answer lay in the server control chip, Q102 a Sony CXA-1082Q. I sourced one and used a heat gun to melt the solder and ping the chip off the board. I used my desoldering gun to clean all the contact tracks before fitting the new chip.
All fixed and the player is now working fine and running in its new Elna Silmic II caps in its new owner's system.