If it gets opened, or its value gets reduced, this fault will occur. It is connected to the negative rail and the collector of the horizontal output transitor. Hello You just replace the capacitor fitted very near to the horizontal output transistor, there may be one or two of them, whcih comes to a value of 3900pf to 6700pf 2000V or so. If it heats up so, make sure that the LOT is defective, and it should also be replaced. Replace the horizontal output transistor first, and check whether it heats up ubnormally within seconds after switch ON the Tv. If LOT has internal winding short, the horizontal output transistor will get overheated and finally shorted. Normally LOT cannot be checked with normal measuring instruments. If it is found shorted, the LOT should also be checkd for winding short. It is a common fault to all type of CRT based TVs, and show this type of fault. Hello Check its horizontal output transistor for short circuit. Press the 'All posts' at the bottom of the list, then you can select them one by one. The search result might display about 20 Nos of related posts. Type in this key phrase ' my service table today ' in the search box at the top right of the the home page, to get gathered some pages which has the details of practical experiences of the author of that site. If you wish to get some details check the site linked here. If the voltage is absent check the feeder resistor if any. Replace the horizontal scan output transistor. Check the LOT (Line Output Transformer) too for damage. Check and replace damaged component/s at its horizontal scan output section circuit. If this frequency is found higher than normal, The main IC jungle should be suspected.Īnyway, go forward after checking this frequency.
It should be around 15625HZ, with no signal.
#TRANSISTOR TT 2222 PDF DRIVER#
Before proceeding, desolder out the horizontal output transistor 2222 fro circuit, and measure the frequency at the collector point of horizontal driver transistor.
The last reason for this fault is defective Line Output Transformer itsef. Even one winding get shorted, it will cause to a heavy load flyback transormer which in turn to 2222 failure. The second reason is the short in horizontal yoke windings. If this capacitor has opened of developed in value, the result will be the failure of the horizontal output transistor, at switch ON itself. Hello Before replacing an other one, replace the freewheeling capacitor, the capcitor fitted between the collector of the 2222 and earth usually of a value of 3500pf 2000VDC, some times this value may differ from set to set. Description: Transistors Bipolar - BJT NPN G.P.
#TRANSISTOR TT 2222 PDF PDF#
คำค้น: tt 2222 pdf 2N2222AUA Optek / TT electronics Transistors Bipolar - BJT NPN G.P. The packages shown are is the straight-lead packages used for standard products. Transistor tt 2222 datasheet in pdf format supplied by Datasheet Archive.
#TRANSISTOR TT 2222 PDF TV#
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