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| Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems. |
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Emerson TC2555D Low Width
Have a Emerson TC2555D that has INSF . Width . Have no schmetic . Set was
DEAD . Replaced Q401 , STR30110 , C435 ,R521 , R507 , Solder R473 , R474 Some brands of STR30110 ICs do not work. For some odd reason, the output voltage (pin 4 of the STR30110) is supposed to be 130v instead of the expected 110v. A bad new STR30110 will read 110v on pin 4 and cause low width. If this is the case either try another brand, or try a STR30125, or 30130. Check voltage on pin 4 to verify you are around 130v. Also make sure you used the right value for R507 47 ohm. Ron |
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