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54cm Goldstar tv Model no: CZ 20A 90Y

Zener Diode in power supply blown away near IC STR S6707. Need to know the value. Its placed on ZD 811.

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Ordinary zener diode

Posted on Mar 28, 2010


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Please help about the two diodes with color red, red, gray located in power supply unit. The IC switching voltage regulator is STR F6656.What is this diode? It is Zener?

If you wish to get some details; check the site linked here. Pull up older posts. Surf the site with patience.
Power supply circuit diagram using STRF6656 is given. There are many TVs using this circuit in the SMPS. You can get details there. Type in the STR number; in the search box at the top right of the display window; to get gathered related posts.

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just read the model and then google it, beside, if you short them, you need to replace them with same value, and this will be determined by the circuit, if you did not change the circuit - just buy two new diodes and install them, do not bother with voltages as they have some tolerance and type will determine it.

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S6707 regulator power supply does not work

Check all the associated components, resistors, zener diodes etc: before replacing it with a new STR. If you wish to get the schematic and some other details, check the site linked here.
Pull up previous posts by its left sidebar, or type in the brand name and model number to of your set, to its search box, and press 'Enter' or view it in Mosaic / Timeslide option.

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Zd 3 diode value on boston acoustic soundware xs 5.1 subwoofer

Did you find the value of ZD3.
I need it too.
I have the same problem, and I take out the ZD3 and the subwoofer works. But I'm not sure that is correct. I think it may be the circuit stand by.

May 27, 2012 | Boston Acoustics SoundWare XS 5.1 Speaker...

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My hitachi 29in ctv power supply 110vac had a problem on zener diode will blown if we switch on the tv. what spare parts to change so that the power supply zener diode will not blown again and the supply...

The secondary output voltage comes out from is more than it should be there. That is why, the protection zener diode blows off, as soon as you switch ON the set. First find and repair the power supply regulator, for correct output voltage. Refer its repair book for details. After repair include the zener diode in place. OK.

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I have sony J21mn11. problem not power on only red lit led only.i check all the components on the power supply area and horiz. output D1878 all are good. there is power IC STR S6707 on power supply area. i...

If you have a digital tester or analog try to check the voltage reading from the power supply if high or low or no supply.Check first following voltage location and section. * Check the AC voltage from ac cord to fuse and before the bridge type diode. * Check the DC voltage after the bridge type diode.if normal voltage. * Then check the voltage into the filter capacitor to regulator ic.the power ic.If theres a input voltage in the power ic,check the output voltage going to harizontal output.If no output the problem is you power output.You need to replace it.

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No Display, no sound- not working, showing dead. But input Power is ok. Picture tube filamment not getting power. model sony KV-2192M3

Check the input fuse first. If it is blown, there will be some short inside the power regulator circuit. Usually Sony sets uses STR regulated power supply. You can see this STR, and Ic, screwed onto a heatsink. Replace it with a same type and number. Before replacing the STR, check the diodes used in that section for damage, mainlu zener diodes. They might get shorted along the blowing of the STR. Check that section throughly before resoldering the new STR.
If any further assistance you needs, get me through Fixya. Ok.

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1 Answer

No video, no audio, red light on in front of TV

Excellent visual acuity technique!! I try to teach that procedure.

IC F6629B is probably shorted and at least one other part will

be open, possibly a zener diode,a fuse,a resistor or combo.

The service diagram would help.Be sure to use OEM first quality

parts.Let me know if you need more help.

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