the project which i succeed to done
i was tried to make inverter by using ic 494 with two mosfet it function well. now i shall prepare the video on how to create the inverter by using this ic.
SONY Trinitron KVG14Q2 Repair Help FROM MY SERVICE TABLE TODAY
TDA8374A (Chroma) _STR S6707 (SMPS switching) _LA7830 (Vertical Scan Output IC) _ Sharp PQ 09RE 11 (9V controlled voltage regulator IC) _ 2SD1877 (Horizontal Scan Output Transistor) _NX1733/m (FBT/LOT) Set received for repair with no picture condition; today . On power ON, the standby LED blinks 3 times and then shuts off. As the standby LED blinks, at least once time, it is clear that the SMPS section circuit to this set is working properly. But, the main system control mcro-computer IC detects something short circuit with any component/s at the main board. As the set is a very old model, the spare part availability will be somewhat difficult. So; I should take much care with work; not to damage more components. I opened the back cover. A visual inspection is done for any damaged component/s on-board. Such as bulged/shorted capacitors, damaged IC/s and such. I found that the vertical scan output IC is cracked. I’ve attach
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