The Media Play is AC Ryan VEOLO ACR-VE94000 4K UHD Media Player . It is still available in Q0010 for about $99/= but I bought this second hand set for $40/= in Carousel but it has a CPU heating problem running as high as 80 0C. This article outline a method where one could resolve this CPU heating problem in AC Ryan Media Player.
What could be the Reason?
There are many reasons and one of the them must be poor heat dissipation. When CPU temperature went beyond the set temperature, it cuts itself off to protect the CPU.
The Construction
The set has a Quad-Core CPU (Cortex-A17 SoC) with a ARM Mali-T764 GPU, 2GB DDR3 RAM and 16GB Flash memory. Its maximum operating temperature is around 70 0C.
The CPU has a small heat sink no larger than 35x35 mm as shown in the attached. It has also a metal plate of around 100x40mm attached by 2 screws on the casing. The metal plate is offsetted slightly from the CPU heat sink, providing an air gap of about 5mm between the CPU and the metal plate. The exact reason for this strange set up is unknown.
What Could Be Wrong? And the Solution
The heat sink was found firmly attached to the CPU by thermal glue. It could only be removed by heating to inspect the condition. Repacking the CPU with new thermal glue would be the solution; instead, a piece of alumimum sheet was inserted in between the 100x40 metal plate and the CPU as shown with 2 purposes
1. To provide a direct thermal contact between the CPU and the 100x40 mm metal;
2. To apply some pressure to the CPU heat sink hopefully to reduce the gap if any between the CPU and the heat sink
The modification appeared to be successful as the CPU temperature was reduced from the original 80 0C to around 55 0C after the piece of aluminum sheet was inserted. The casing took sometime to assemble as some force was required to force-fit the alumimum sheet so that it could be “moulded” properly onto the CPU’s heat sink.
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