Question about Sony Standard (CRT) Televisions

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STR 50115/50115A? may i ask if STR 50115 just the same with STR 50115A?

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  • Shahid Electronics
    Shahid Electronics May 11, 2010

    STR 50115 and STR 50115A are almost same but little difference in output wattage only.


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See the datasheet

Posted on Jul 29, 2012

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Both STRs are almost same and can be utilized as replacement part.

Posted on Feb 10, 2009

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LG tv str w6754 glows and short. power supply is not working?

Replace that STR. Before replacing, check all the related component/s at the SMPS section [HOT] side. any one damaged component will make the replaced STR to fail. If you wish to get some details; check the site linked here. Pull up older posts.
SMPS Circuit diagrams [STRW6754] of many popular brand TVs and other devices are given.
Search the site by type in the "BRAND NAME" or the STR number; of your device; (Exclude the model number), in the "Search box at the top right of the display window of the Homepage" to get gathered related posts.

Sep 04, 2016 | LG Standard (CRT) Televisions

1 Answer

My china crt tv uses str w 6554 but has a fault in power when you fuse it with a bulb it blick the bulb bright.

Check the entire circuit around the STR for any faulty component/s; especially to used Zener diodes. You should check each component in the power regulator section circuit, before replacing an other STR. Any of the faulty components at its circuit, might damage the new STR too. Be care.
If you wish to get some details; check the site linked here. Pull up older posts. Surf the site with patience. Do a search by type in the brand name of your device at its search box and press "Enter".
Power supply regulator section circuits to some popular brand TVs are given. Search the site by the number of STR, used at your TV.

Jul 20, 2014 | Standard (CRT) Televisions

1 Answer

What str used in sharp tv

If you wish to get some details, check the site linked here. up older posts. Power supply schematics to many popular brand TVs are given. Sharp itself uses many STRs. You can compare the schematics and can get the details.

Dec 31, 2013 | Sharp Standard (CRT) Televisions

1 Answer

In onida ky thunder strf6654 getting burn,fuse blown when also change of str.????

Check all the associated components at the power supply regulator section circuit; especially check the zener diode/s. Replace them. Replace the STR only after replacing these components. There is a chance to these components too can damage, when the original STR has burned out by any reason. If you wish to get more, about the schematic diagram; check the site linked here. Type in the number of STR in its search box, or Pull up previous posts, either by type in the Brand name to your set in its search box, or view it in Mosaic / Timeslide / Flipcard option.

Aug 06, 2013 | Standard (CRT) Televisions

3 Answers

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.

Nov 27, 2010 | Sony FD Trinitron WEGA KV-21CL10 21" TV

1 Answer

Have a sony trinitron tv which turns off automatically and sporadically on average every 15 minutes

Most of the sony Tv power supplys are based on STR type regulators. Regulation of an STR is very accurate and if any overload inside the ciruit board of the TV, will be sensed by the STR and will shut off all the supply to the system itself. From your complaint we understands that there is some sort of short, not a direct short, is in your tv. Usually it may related to horizontal output transistor. At first it will work fine, but as time pass on, it will get over heated, passes more current, and place a short like circustance to the power supply rail itself, and as described above, STR will sense it and will shut down the system. After some time, say after 10 or 15 minutes, after the heat generated has gone off, the TV will again switch on, and the cycle will be repeated. You just call a technican and keep this in mind, and ask him to repair the same.

Oct 18, 2010 | Sony FD Trinitron WEGA KV-32FS120 32" TV

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Jul 17, 2010 | RCA TruFlat 27F520T 27" TV

1 Answer

Hitatchi 42pd5000 will not power up

pls. open H-output trangister and out side of pcb and check voltage B+ 135v dc is ok ?.
if yes.then ...H-OUTPUT trangister checked and replace
if not then check SMPS .
3.output Dyode
1st fuse is open then check rectifier dyode cantunity. if sort then replace all 4 dyode.(rectifier)
and if dyode is ok .then check STR cantunity is sort then Replace with New STR but 1st 220uf/450v dc capaciter cheked / 2nd. in SMPS stage any P.F and capciter likage or sort cheked or chenged first after the NEW STR use
*. note: smps pcb checkd any dry canaction pls. Resolder first.

Oct 04, 2009 | Hitachi Standard (CRT) Televisions

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