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carlday1
carlday1, Engineer
Category: Electronics
Satisfied Customers: 329
Experience:  Self Employed Electronic Engineer
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My Technics SL CH550 CD player will play for ten minutes then

Resolved Question:

My Technics SL CH550 CD player will play for ten minutes then shuts down the entire stack. All other components work normally
Submitted: 2 years ago.
Category: Electronics
Expert:  carlday1 replied 2 years ago.
carlday1 :

HI,

Thank you for using Just Answer my name is ***** ***** I will help with your question.

Normally when the system shuts itself down it is heat related, The first thing I would suggest is to check all vents on the system for dust and if possible hoover or brush away as much dust as possible.

Does the system shutdown f you use the tuner or is it only the cd? Can you speed up the shut down time or extend it by turning the volume up or down.

Customer:

Volume does affect speed of shut down. The CD player is the only function that does this

carlday1 :

If volume affects it I am sure is likely to be heat related are the vents clear of dust and blockages

carlday1 :

Could you check that the fan is spinning as they are a common part to need replacing.

Do you plan on repairing the unit yourself?

Customer:

In answer to your question, yes I'll probably do the repair myself, I'll follow your suggestions with regard to the cleaning / fan. Where would I get replacement parts for this admittedly ancient piece of kit ?

Customer:

Just checked fan, doesn't seem to be running

carlday1 :

If you do plan on repairing the unit yourself.

I would suggest that you unplug the unit (including all audio connections) and remove the lid on the amp and give everywhere a good clean and remove as much dust as possible, I use compressed air from an airline or a can to blow away the dust.

I would also use alcohol IPA to remove any thermal paste from the output transistors and any other components that have it and I would replace it with some fresh thermal paste.

http://www.maplin.co.uk/p/servisol-high-thermal-conductivity-heatsink-compound-n57al?gclid=CN-KtdSz48ICFSbnwgodhD0AeA

Parts should be available but would probably take some finding once you have confirmed it is the fan, If you send me a photo of the fan label I should be able to point you in the right direction to buy one.

carlday1 :

If the fan is not running it could be faulty I would leave the unit on and see if it starts, I cannot remember if it runs all the time or only when the unit gets hot.

Customer:

Thanks Carl, How would I send you details now you've " stepped out " ?

carlday1 :

If you log back in you should still be able too see the question and send me a photo, if you cannot let me know and I will send you an upload link

Customer:

Thanks again, rated excellent so you should definately be paid !

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