I found that one of the TL594 was fault but i replace two of them. I would be verry happy if someone can help me.Īfter some while i check what i can and i found a few fault parts. Must i check somethink else before powering it after replacing the parts. I ordered the parts and want to replace it. Do someone know what it is? Because it is shorted between all 3 legs. It has 476-02 Numbers on it and sign of Motorola. Am i thinking right? And i also check transistors on the heatsink and 3 of them are TIP30C and one of them is shortet between emiter and colector so there is also problem. I found out on the YouTube the video about similar scope and i found that the problem could be on the TL594CN pwm driver and i think the problem is there because i measure voltages on the Vcc input and on the first it was 65,4v and on the second 30V and the reference voltages on the first it was 0V and on the second 5,9V so i think the one is damaged. What can i do now to find what is wrong? I disconnect power supply from the rest by desolidering jumpers and there was no change in the voltages. When i pluged it and power on nothing is working, no any sign of powering. Hello, i buy Tektronix scope and it supposed to work but it isnt.
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