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No power in secondary transformer and no light in led

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Make and model will help us do the research, please post back and provide the information.
If you are going to DIY and have proper tools, electronics knowledge, and know safety precaution then please read on:

Please see my basic troubleshooting guide here:
http://www.fixya.com/support/r5093881-lcd_flat_panel_tv_troubleshooting_guide

Failed TV and Monitors: http://s807.photobucket.com/home/budm/allalbums

http://en.wikipedia.org/wiki/Capacitor_plague

Parts: www.shopjimmy.com
Capacitors kit: http://lcdalternatives.auctivacommerce.com/Default.aspx he can make you a set of caps.

Posted on Oct 06, 2010

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Schematic malibu 8100-9120-01


http://waterheatertimer.org/Malibu-power-pack-stopped-working.html

I don't think they post schematic for the transformer
But generally, the primary coil receives 120Volt AC input from household electrical outlet
And the secondary coil produces 12Volt AC output for the low voltage lights.
The 'coil' is a coil of insulated wire wrapped around a metal core. Two coils set side by side create a transformer... when primary is energized, the secondary responds to the magnetic field caused by primary core... resulting in a current that flows on the secondary coil.
Output voltage on secondary coil is determined by the number of wraps and diameter of wire.

Some transformers offer a choice of secondary output... Kichler for example... you can select 12-13-14-15 Volt AC output
This is achieved by the way the secondary coil is wrapped.... for less voltage a wire is tapped at one point on the coil... for more voltage, a wire is tapped at another point on coil. This gives the user several wire choices to connect the lights.

Gene

May 09, 2014 | Intermatic Malibu 300W Power Pack...

1 Answer

LED Light Malfunction


This sounds like a transformer is going out possibly. You are losing power in the system.
I would have an electrician check the system before moving forward.

US Parts Center

Mar 31, 2014 | Pool & Spa

1 Answer

Hello, I have pentair minimax 250 pool heater. When turning on the temperature, ddtc cycle to off. Nothing happen, no clicking noise, blower doesn't turn on , no error code on LCD. No led light in the back...


check main power supply for proper voltage, check primary and secondary sides or transformer, 24 vac getting to display screen???? 120 vac getting to blower???

Nov 27, 2013 | Pool & Spa

1 Answer

My sx-315 pioneer receiver overheated and shut down.


Probably the thermal fuse in the main power transformer. Check for ac on both the primary and secondary of the transformer. If you have 120v ac on the primary when the standby light is off and nothing on the secondary you need a new transformer.

Feb 08, 2009 | Pioneer SX-315

1 Answer

Main power light turns on but i have no picture or sound


Take a closer look at the power board fuses. There is a fuse numbered 106 a little ways away from the rest of them. I have this same model and got it working long enough to diagnose a bad flyback transformer by replacing this fuse with one from Radio Shack. At some times, I could put in a new fuse and have the set work for a few weeks. The flyback transformer is available from parts.pioneerelectronics.com for around $60.

Jan 29, 2009 | Pioneer SD-P50A5-K 50" Rear Projection...

1 Answer

Monitor is totally dead


Through my past experience I mwould remove the solder point at the input power B+ line to primary winding FBT. If the HOT has shorted there will be no power.Straight to the point if you know where the HOT is , you can desolder the middle pin or collector of the HOT transistor. If you desolder the pin which result the power led light turn up. That indicates either FBT or HOT has shorted

Apr 19, 2008 | LG Studioworks 45 14" CRT Monitor

2 Answers

Will not stay on


RED light is protect circuit = do not disable !
Look for C702 near flyback transformer - might be hidden in
glue = check it = if shorted, replace 102K / 2KV with 3KV =
Sony part # 1-161-754-00 and replace E994 pico fuse.....T.

Nov 08, 2007 | Hitachi 60UX54B/55K 60" Rear Projection...

3 Answers

Amp power


Make shure with an ohm meter that the primary and secondary windings have very little resistance on the main trasformer,then check voltage in trasformer and out from transformer...BIGRED

Sep 02, 2007 | Audio Players & Recorders

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