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Switching of a str 6707 in onida tv

Sir i have a onida tv set having a let start problem . i have worked on this . replaced some elco.s str 6707 is used in power supply for 110v . tr.A966  is not working well. after triggering by brobe  get starts. pl. help me.

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PAVAR SAPYA VAL NAKADT

Posted on Sep 03, 2012

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SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

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SOURCE: Model Sony KV-G21q2S Problem-STR 6707 has

This is the SMPS Power suply drive and the IC fails ONLY if there is fault in the circuit. You need to check on the SMPS section
check this link below for tips:

http://www.fixya.com/support/r5826301-working_switch_mode_power_supplies

Next you need to check if the LINE output transformer has failed. If so this will have a higher current drain and so switch off the SMPS unit. check for the EHT drivers, capacitors in the HT circuit.

Posted on Jun 25, 2011

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Hii everyone I'm new on fixya. Kindly pls help me.. my problem is i got a onida tv wich has a power supply fault...first it blows the fuse...then i replace a short cap. Now the another probolem arise. When...


What is the model and make?...its vary rare for any set to show 300 Volt on the main filter on the hot side of the power supply...generally with the set off and power correction factor inoperative it should be about 162 and go up to about 340 with the set on and power factor correction active.

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STR 6707 give output voltage more than 110 voltage of TV Onida model BLACK


Check it with load. If it shows more than 112VDC, the IC is faulty. If you wish to get some details; check the site linked here. Pull up older posts. Surf the site with patience. http://electronicshelponline.blogspot.com/
Check all the related components at the SMPS section circuit, before replacing a new IC.

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Model Sony KV-G21q2S Problem-STR 6707 has been changed. After an hour the went down. The fuse and STR 6707 are working. But no picture no sound. When plug in it gives "boo" sound for few...


This is the SMPS Power suply drive and the IC fails ONLY if there is fault in the circuit. You need to check on the SMPS section
check this link below for tips:

http://www.fixya.com/support/r5826301-working_switch_mode_power_supplies

Next you need to check if the LINE output transformer has failed. If so this will have a higher current drain and so switch off the SMPS unit. check for the EHT drivers, capacitors in the HT circuit.

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1 Answer

Dear Sir, I'm Bangladeshi Tv Techanician, Sony tv


Hello

Before replacing the STR, have you checked all the components related to it? When STR burns out some of the nearby components, such as zener diodes and other resistors will also get damaged. You just replace the components, especially, zener diodes, in case it does not show any fault, replace it. Connect a 100W filament type bulb in seris with the power supply, and switch on the set. This will reduce the power concumton at the begining, and we can check its heat effect also, after all are ok we can connect directly. Check the smoothing capacitor at the secondary 130VDC. Replace it also. If you need furthermore assistance, feel free to contact me through Fixya. I'm an Indian, residing at Trivandrum, the capital city of Kerala State.

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