Olik Active Speaker Repair
The complaint with this Olik active speaker was the USB port and the display were not functioning. See the photo below of the no display symptom.
To me the problem more like a no power symptom in the USB circuit board.
The first thing I did was to remove the cover and access to the USB card and check for the dc supply. Most USB card uses 5 volt DC to operate and my voltmeter registered 5 volt when measuring on the DC supply. This means the power supply was good and the problem is in the USB card itself.
I did another careful looked at the USB card and found that those ICs used were not common (hardly can be found in the market). It could be the program had corrupted but because I do not have access to the parts and the program, I told myself that this problem was not worth to repair.
So I bought the whole new USB card from the market and replace it and soldered the Antenna wire too at the back of the card.
Once done fixing the USB card and powered On, the display lighted up as seen from the photo below:
In certain cases only, it is not really worth the time to repair the circuit board due to the unavailability of the parts. Besides the customer can get his device back sooner as possible if I directly replaced the card. Ok, hope to see you again in the next article.
This article was prepared for you by Suranga Bandara who owns an Electronics repair shop in Anuradapura, Sri Lanka.
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