Colecovision Power Supply Repair (missing +5v)
Damn! the case Housing of the Power Supply is glued and is not a nice thing.
Defect:
- +5v is missing.
Replaced components:
- 1 x IC CA723CE (Precision Voltage Regulators)
Analysis of the defect:
- Tested the cable.
- Tested the transistor TIP41C soldered on the PCB.
- Unsoldered the transistor TIP41C and i have again tested to make sure 100% that is not died, the transistor was not in short circuit or interrupted.
- With the transistor TIP41C unsoldered i have tested the output of the IC CA723CE PIN 10 VOUT which appeared to 0V instead of +5v while the input voltage (unregulated) PIN 12 measured +17v and VREF 6 PIN was correct.
Gallery of the repair:
Categories: Projects / Repairs, Today, Various
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