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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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#1
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Philips 34cm tv turned itself off.
Looking for Philips KR3684 34cm tv (circa 1980's) service manual, especially now it switched itself off (fuse OK, degausser sounds like it comes on, +300vdc present on filter cap, standby light off).
Anyone know where I can source old Philips' tv schematics, even just it's startup circuit? ---------- Sent via SPRACI - http://www.spraci.com/ - Parties,Raves,Clubs,Festivals |
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#2
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Philips 34cm tv turned itself off.
On 08 Apr 2007 08:12:28 GMT, whitebridge
put finger to keyboard and composed: Looking for Philips KR3684 34cm tv (circa 1980's) service manual, especially now it switched itself off (fuse OK, degausser sounds like it comes on, +300vdc present on filter cap, standby light off). Anyone know where I can source old Philips' tv schematics, even just it's startup circuit? Without knowing anything about your particular set, I'd look for an open circuit startup resistor (~300K) connecting your PWM controller IC, or the base/gate of your chopper transistor, to the +300vdc supply. - Franc Zabkar -- Please remove one 'i' from my address when replying by email. |
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