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Please I have one Sharp CTV 14AG1-S , it shutdown immediately after I turn it on , and was removed the pin 36 of IC801 which is protection pin and does the same things

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Tom Chichester

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  • Sharp Master
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Probable power supply failure

Posted on Jul 26, 2020

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gopakumarg43

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SOURCE: Sharp CTV protection solutions

If you wish to get some details; check the site linked here. Pull up older posts. http://electronicshelponline.blogspot.com/ the site by type in the "brand name" of your device, in the "Search box at the top right of the Homepage" to get gathered related posts.

Posted on Nov 04, 2016

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Sharp CTV protection solutions


If you wish to get some details; check the site linked here. Pull up older posts. http://electronicshelponline.blogspot.com/ the site by type in the "brand name" of your device, in the "Search box at the top right of the Homepage" to get gathered related posts.

Nov 04, 2016 | Sharp Televison & Video

1 Answer

I have sharp tv model 20v-r70m not power on the b+ is ok i try test 9v supply go to ic801 drop the 9v,then i try replace ic801 nothing happen, how to fix this


pls. check if there has 5v ic regulator... also check the open non- electrolytic colored yellow or orange tantallum capacitor near the talc switches and memory ic.if i'm not mistaken.... the capacitor value is 2.2uf 50v.

Jul 14, 2014 | Sharp Televison & Video

1 Answer

My Sharp CD-M10000W displays "PROTECTION"


Generally speaking, an amp attempts to protect itself from heat, shorts, overloads and operator exuberance by refusing to turn on or stay on.

Overloads can be from excessive periods of high output or marginally low impedance loading by the speakers; and shorts would be wiring issues or a speaker blowing up.

You should be able to feel if it's hot. WHY is it overheating? Make sure it has sufficient ventilation on all sides and that vent holes are not blocked by dust balls. Ensure the fan (if equipped) is running as designed (some only operate on demand). Clean dust and debris from it.

If the amp comes back on after cooling, you're lucky. They only have so many self-protection cycles in their lives so continuously resetting or cycling their power without addressing the cause can do more harm than good.

If it protects immediately on a cool power up you should disconnect the speaker connections and try it 'nekkid'. If it comes up then diagnose which lead(s) are shorted. If it does not come up the problem is internal and should be left to an experienced and competent hands-on tech.

Check for loose speaker connections at the speaker as another possible root cause for intermittent shutdown.

Sep 06, 2011 | Sharp Multi-System Mini Component System...

1 Answer

I have a sony wega trinitron, when the tv is turned on, (no visual, or sound) the red stand by light blinks 7 times, and you hear the tv click off? Please help


Seven blinks - High voltage shutdown. The high voltage has exceeded 33k and the unit goes immediately into safety shutdown. Check power supply regulation and horizontal circuits.

Jun 06, 2011 | Sony FD Trinitron WEGA KV-36FS120 36" TV

2 Answers

My led power indicator flashes seven times, when i cut the tv on it cuts back off. How do i fix this problem?


  • Seven blinks - High voltage shutdown. The high voltage has exceeded 33k and the unit goes immediately into safety shutdown. Check power supply regulation and horizontal circuits.
Hope that helps.

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

1 Answer

Standby blight bliks for seven time tv wont turn on


Hi,
Seven blink indicates that there is a high voltage shutdown. The high voltage has exceeded 33k and the unit goes immediately into safety shutdown. Check power supply regulation and horizontal circuits.

Hopw this helps .

Jan 23, 2010 | Sony FD Trinitron WEGA KV-36XBR800 36" TV

1 Answer

Using Convection Oven and lost power Sharp R-7A85


Replace fuse with slo blow from Ace Hardware. Plugged unit in, clock worked. Turned unit on and immediately blew new fuse. Will fix it with a new unit.

Mar 21, 2009 | Sharp R-7A85 Microwave Oven

1 Answer

Sony wega kv-36hs20 will not turn on


SEVEN Blinks---High voltage shutdown. The high voltage has exceeded 33k and the unit goes immediately into safety shutdown. Check power supply regulation and horizontal circuits.

Mar 02, 2009 | Sony FD Trinitron WEGA KV-36HS20 36" TV

1 Answer

Sony 36XBR800 Standby light flashes ...no picture sound


Hello,

For 6 blinks,Pls check following area.

Low HV Shutdown:
On the D Board.
Check IC8004/pin 7 should be 7.4v.
Check IC8006/pin 2 should be 2.5v if lower will trigger shutdown by causing pin 1 to turn on.
Check IC8006/pin 3 reference voltage 2.2v.
IC8006/pin 1 normally at 0v. If high
turns D5007 ON which turns the latch circuit Q6532,
Q6530, and Q6527 ON and turns the AC relay RY6501 OFF.

And NOTE: 6 blinks also can be Low B+ protection.

Unregulated 7.5 v from the power supply to 5v reg IC504 on the A Board. 5v to M Board Q2314

to CPU IC2300/pin 43. If 5v missing set will shutdown with 6 blinks.

I think this will help you to solve the issue.

Dont forget to Rate!!

Good Luck
Dals123

Apr 10, 2008 | Sony FD Trinitron WEGA KV-36XBR800 36" TV

1 Answer

Tv Powers up and immediately back off


This model is equipped with a self-diagnosis feature to help with diagnosis of shutdown problems. To activate this turn the unit on let it shutdown then press the input and menu buttons on the front panel simultaneously and hold them in for 5 seconds after 5 seconds the power LED on the front panel will blink a two digit sequence. This will be one set of blinks a short pause then another set of blinks, this will repeat 5 times. 1 - 2 = no error detected 2 - 1 = X-ray protect (high voltage or beam current) 2 - 2 = Short protect (short protect monitors low voltage supplies) 2 - 3 = Deflection protect (this could be loss of vertical or horizontal deflection) 2 - 4 = Vertical protect (usually loss of vertical from the source) 1. Shutdown at power with self diagnosis error 2-2. Check for open fuses F9A04 and F9A05 part # 283P144080 on the +24 and -24 volt lines. If the fuses are open the convergence output circuit would be suspect. 2. Shutdown at power with self diagnosis error 2-1. At power on check for 12-volts DC at connector KH pin 8, if missing check IC9C51 part # 270P990010 and L9C52 part # 441D009020 on the Signal PCB

Aug 08, 2007 | Mitsubishi VS-5043 50" Rear Projection...

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