Question about Yamaha YST-SW150 Speaker

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Yamaha yst-sw150 I had a power surge that damaged the transformer. Looking for replacement part number or output voltage.

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SOURCE: Yamaha YST-SW150 Subwoofer

hi, is it a humming noise ??? check if the connector is plugged in properly,check the earthing, if its a three pin mains plug, if its a two pin, then the CPU SMPShave a proper eathing. let me know

Posted on Jan 12, 2008

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1 Answer

Noisy flyback transformer


It is damaged. no repair to it. Replace it with same number. Check and replace damaged component/s at its horizontal scan output section circuit. Check the LOT (Line Output Transformer) too for damage. Replace the horizontal scan output transistor. Check the input voltage to LOT. If the voltage is absent check the feeder resistor; if any. If you wish to get some details; check the site linked here. Pull up older posts.
http://electronicshelponline.blogspot.com/
Type in this key phrase " my service table today " in the search box at the top right of the display window of the home page, to get gathered some pages which has the details of practical experiences to the author of that site

Jul 20, 2016 | Televison & Video

1 Answer

Tv dead during lightning


Could be minor or maybe done for but here goes. Some flat panel TVs have the main power cord with one of those small transformers built into the plug end that converts 120volt ac to DC power. Output voltage should be listed on the transformer tag. You need to find someone with a voltage tester and see if the TV plug end is showing DC voltage. If not the complete power cord needs replaced. If that checks out-- the next thing is to remove the complete TV back cover and look for fuses right near the power plugs into the TV. The fuses should blow out first from a lighting surge. The problem is how much of a surge you got. It may have damaged the power supply board in the TV which may need replaced. Hope this helps

Jul 12, 2015 | Televison & Video

1 Answer

My orion tv model number sled4668w just went black no sound no picture


Two possible faults:
1. Fault to the main power supply regulator [SMPS] section circuit. Check and replace damaged component/s at its main power regulator [SMPS] section circuit. Contact any service technician.
2. Check and replace damaged component/s at its horizontal scan output section circuit. Check the LOT (Line Output Transformer) too for damage. Replace the horizontal scan output transistor. Check the input voltage to LOT. If the voltage is absent check the feeder resistor; if any. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts.
http://electronicshelponline.blogspot.com/

Jul 11, 2015 | Orion Televison & Video

1 Answer

When tv is powered on tv only displaying channel number and sound -no raster. using video mode displays are ok. sound is also ok


Check and replace damaged component/s at its horizontal scan output section circuit. Check the LOT (Line Output Transformer) too for damage. Replace the horizontal scan output transistor. Check the input voltage to LOT. If the voltage is absent check the feeder resistor; if any. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts.
http://electronicshelponline.blogspot.com/

Dec 06, 2014 | Sharp Televison & Video

2 Answers

I HAVE SHARP COMPANY 21 INCHES CRT MY FRIEND TV SET PROBLEM IS SET DEAD IN POWER SUPPLAY TRANSISTER 1886 REPLACED AFTER POWER SUPPLAY IS OK FBT ARCKING THEN IMMEDIATLY SET SWITCH OFF SET IN CIRCUIT R6


Check and replace damaged component/s at its horizontal scan output section circuit. Check the LOT (Line Output Transformer) too for damage. Replace the horizontal scan output transistor. Check the input voltage to LOT. If the voltage is absent check the feeder resistor; if any. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts.
http://electronicshelponline.blogspot.com/

Nov 21, 2014 | Sharp Televison & Video

1 Answer

Flyback b+ low


Two main reasons. Fly-back transformer [including it H-out transistor] and/or the main power supply section [SMPS] fault. Check and replace damaged component/s at its horizontal scan output section circuit. Check the LOT (Line Output Transformer) too for damage. Replace the horizontal scan output transistor. Check the input voltage to LOT. If the voltage is absent check the feeder resistor; if any. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts.
http://electronicshelponline.blogspot.com/

Oct 27, 2014 | Televison & Video

1 Answer

How do I repair a power surge failure


Check and replace damaged component/s at its horizontal scan output section circuit. Check the LOT (Line Output Transformer) too for damage. Replace the horizontal scan output transistor. Check the input voltage to LOT. If the voltage is absent check the feeder resistor; if any. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts.
http://electronicshelponline.blogspot.com/

Oct 04, 2014 | Televison & Video

1 Answer

Resetting a tripped kitchler low voltage transformer


Model number is not known.
I did not know that Kitchler transformers have a circuit breaker.
Usually they have an override switch.
Did you set the timer to override, what does your product manual say?
Is the transformer humming? Kitchler transformer are supposedly non-audible, but there should be some indicating sound. The humming sound indicates the transformer is working.
Does the unit have photoeye? Cover photoeye with black tape.
Test outlet with circuit analyzer.
Check outlet voltage: if you have 120Volt then output is 10% or 12Volts. If you have reduced voltage, then output is still 10% but might be lower than needed to operate bulbs.
Plug timer into different outlet.
Test output terminals with low voltage tester.
Did you have power outage or nearby lightning strike? Transformers are not protected from surge.
Suggest you contact kitchler.
Kitchler.com website is useless
888-412-4877
7711 E Pleasant Valley Rd
PO Box 318010
Cleveland, OH 44131
Kitchler products are probably warranted through the seller.
Kitchler product manuals are almost non-existent.
Scan your product operating manual and parts list into .pdf format and post on web for others to access.

Aug 09, 2012 | Hardware & Accessories

1 Answer

Power supply output for Yamaha p4500 secondary output for the power supply so that i could check the voltage


Hi Joel, although we've sourced detailed schematic for this P4500 amplifier, there are no many voltage details on it for manufactures sake. Anyway, mine findings are. Secondary winding on main transformer should supply no less than 2 x 75 volts which makes after rectifying and filtration no less than 2 x 90 volts on capacitors with amplifier without input signal. Also transformer has to be very "hard" , otherwise amp will start clipping before reaching stated wattage on output.

Oct 17, 2011 | Yamaha P4500 Power Amplifier 2-Channel

1 Answer

I have a YST-SW150 speaker that turns it self off after 7 minutes , turn it back on and it'll go again for 7 minutes, (sounds good those 7 min) music sensor auto on/off is off


I just fixed one of these with the same symptom.
In between the power supply board and the amplifier board are a number of rather fine interconnect wires. One of these is the shutdown/startup control line for the auto on/off function.
In my case the wire had been pinched where they are cable tied together. Causeing the power supply to think there was no music input and should shut down.
rejoing the broken wire rectified the problem.
In my case more than one wire had been damaged.
the shut down line is labled SO on the amplifier board connector.
7_19_2012_1_10_37_pm.jpg

Aug 10, 2010 | Yamaha YST-SW150 Speaker

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