![]() ![]() When i substitute another transistor with the spec about the same as the original, the monitor work perfectly fine and when i use my finger to touch it, the transistor only got a little bit warmed which is normal. I have tested a transistor with the storage and fall time slightly out from the original specification and when i switch on the monitor it only worked for few hours before it became real hot and can burn your finger. Different transistor have different spec, if you really want to find a replacement for horizontal output transistor make sure you look at the storage and fall time as well besides bigger voltage, current and wattage. The real problem is in the switching time which we call it the storage and fall time. Why the transistor blow even if it has a higher voltage, current and watt compare to the original transistor?. Higher voltage, ampere and wattage will cause complete destruction to the transistor because it is not easy to find an exact replacement for horizontal output transistor. If you are looking for replacement of signal transistor, a higher voltage, amp,and watt will do the job but not in the case if you want to find a replacement for horizontal output transistor. There is one tip for you if you want to find a replacement for a transistor. The normal transistor subtitution book only show you the voltage (v), current (amp) and wattage (w) rating but the ECG master replacement guide show beyond than that such as the frequency, current gain and the diagram of that particular transistor that you are searching for. Though you can find a replacement from the smaller version of the transistor databook, the ECG master replacement guide provide better information and more reliable specification compare to the normal transistor substitution replacement book. In this guide it will list out all sort of transistor data and specification which include the bipolar transistor, field effect transistor (fet), junction field effect transistor (jfet), signal transistors, high voltage transistor such as the horizontal output transistor, silicon power transistor, surface mount transistor, digital transistor and many more! Not only that, the equipment also can't be repair due to unable to find the exact replacement. Without this guide i will be searching in the dark and waste my precious time. The cost of this book is not expensive and if you are in the electronic repairing line, i highly recommend it. You can see the internal diagram of that particular components, pin out, voltage, replacement, block diagram and the component's layout. In the content you can find out all sort of the components specification. The most popular transistor cross reference replacement guide is the Philip ECG semiconductor master replacement guide. Transistor cross reference replacement and guide is very important for every engineers and technicians because the data that you found in this guide can help you to find the exact replacement for the components that you are looking for such as transistor, fet, ic, diode, zener diode and etc. I went back in and re-flowed the solder on HE06/HE08, but it still has the un-even problem.Electronic Components> Transistor>transistor cross reference replacement Transistor Cross Reference Replacement I hit those with freeze spray and the channel came back. I turned it off, let it sit a few seconds and turned it back on and the right channel was out. I did hit the transistors on the tone/pre-amp board with freeze spray and HE06 and HE08 gave a crackle. It is not a big difference, but I can notice it. If I switch around the pre-amp/amp connections, the problem moves, and the right channel is brighter and a little louder. Here is the problem.I have been working on a 1070 and everything has gone well with the recap, but the right channel is a little less bright and a little lower volume than the left. I found an NTE number (199/234) but it seems that the forum does not like NTE parts and I rely on the experience provided here. Think I might have a couple of pre amp drivers that need replacing and was wondering if anyone had the proper replacement part # for a 2SC1328 and a 2SA763. ![]()
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