CD5500 heat issue

2 replies
BA
Offline
baek47
Bronze
Posted April 25, 2021 at 18:26 GMT
#2155101

Hi

I have a cd5500, everything is functioning, but the back left corner on the chassis gets pretty hot.
Inside is a "heatzink" with 2 pcs. 7805 voltage regs and a bd534 transistor. The surface temperature on heatzink meassured with an infrared termometer is 45 gr C. The plate is evenly hot.

Is this normal?

I tried to change electrolytics in the powersupply and the 2 7805 voltage regulators - no change….

baek47

 

 

BA
Offline
baek47
Bronze
Posted April 26, 2021 at 07:15 GMT
#2155102

Thanks Kim and Martin

Yes, I did change input mains to 240V.
I helped a bit but still the above temperatures.
Thanks for the good advice - always important to do this :- )

Also - I can hold my fingers on the heatzink, which many places is referred to as "ground rule".
Thanks for the advice Martin....

I will now listen with no worries to this great cd-player..... 

baek47

 

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