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Advance F32 Dimmable - IZT-2S32-SC An Advance dimmable ballast for F32 lamps. These are something I'd gotten on eBay, but doesn't work... :( (sold as new but was obviously used) Top pic shows the outside, bottom is with the cover removed. There is nothing visibly obvious as to what is wrong (no burned parts or even signs of anything getting hot). If you look closely near where the black/white wires go in, there's a round black part...that is a fuse, and its blown. So obviously something went wrong. As an experiment to see if anything would happen, I took it outside, hooked up a pair of lamps, then rigged a string of lights to put it across the fuse (putting it in series with the ballast circuit)...basically zero chance of blowing anything up if there was a short. The Christmas lights lit at 100%, and nothing at all out of the fluorescents (no sounds or anything out of the ballast either)...that to me indicates that it is indeed a dead short. ----------- Don't know why, but it sure is difficult to get ahold of a deal on dimmable ballasts these days.

Advance F32 Dimmable - IZT-2S32-SC

An Advance dimmable ballast for F32 lamps. These are something I'd gotten on eBay, but doesn't work... :(
(sold as new but was obviously used)
Top pic shows the outside, bottom is with the cover removed. There is nothing visibly obvious as to what is wrong (no burned parts or even signs of anything getting hot). If you look closely near where the black/white wires go in, there's a round black part...that is a fuse, and its blown. So obviously something went wrong.

As an experiment to see if anything would happen, I took it outside, hooked up a pair of lamps, then rigged a string of lights to put it across the fuse (putting it in series with the ballast circuit)...basically zero chance of blowing anything up if there was a short.
The Christmas lights lit at 100%, and nothing at all out of the fluorescents (no sounds or anything out of the ballast either)...that to me indicates that it is indeed a dead short.

-----------
Don't know why, but it sure is difficult to get ahold of a deal on dimmable ballasts these days.

U_DIM48.jpg VE6G3564.jpg _A-IZT2S.jpg _A2S60.jpg _A2X96HO.jpg
File information
Filename:_A-IZT2S.jpg
Album name:XmasLightGuy / Fluorescent Gear
Manufacturer:Advance
Type/Model:IZT-2S32-SC
Wattage:2x32
Date manufactured:-unknown-
Filesize:424 KiB
Date added:30 Jan, 2018
Dimensions:1904 x 864 pixels
Displayed:28 times
URL:http://80.229.24.59:9232/gallery/displayimage.php?pid=7386
Favourites:Add to Favourites

Comment 1 to 9 of 9
Page: 1

Funkybulb   [30 Jan, 2018 at 08:52 AM]
I would check those PFC caps, and MOV and those diodes on the input stage of this ballast.
Kev   [30 Jan, 2018 at 09:39 PM]
It's made in China! The dimmable ballasts are still quite available here at the moment!
XmasLightGuy   [31 Jan, 2018 at 01:37 AM]
Its still laying on the floor from when I took it apart for experimenting with a few weeks ago Laughing I was thinking about testing atleast the 2 large caps.

Yep, made in china and assembled in Mexico Confused

dimmable ballasts are still readily available here too...just at high prices!
Kev   [31 Jan, 2018 at 07:32 AM]
You could also try checking the 2 varistors the 2 blue things at the front of the PCB
XmasLightGuy   [01 Feb, 2018 at 12:42 AM]
@Kev: That would be easy enough, but how do you test a varistor? Simply check ohms, make sure its not shorted? (not a part I've ever done anything with)
Funkybulb   [24 Nov, 2018 at 12:47 AM]
that Black round can that on Left of board where it say F that the Fuse. check that first
FrontSideBus   [24 Nov, 2018 at 09:41 AM]
I would have said that was a bridge rectifier package tbh.
Ash   [24 Nov, 2018 at 09:30 PM]
Measure resistance between all 3 pins of the mosfets, and also all low resistance "big" resistors in their vicinity

If a mosfet is shot it will with high probability appear shorted (really hard shorted, not as a "diode", since intact mosfets and transistors do act as diode between certain pin pairs)

A shorted mosfet then tends to blow open current sense resistors which are in series with it, as well as the nearest element of the logic driving it (typically a smaller mosfet or a chip on the back of the board)

If there is no evidence of a short happening, desolder and test the capacitors including the film ones



FSB the rectifiers are normally placed further into the circuit than the EMI filter components. Routing all sorts of stuff around the EMI filter is counterproductive from an EMI standpoint, so it's not really expectable to find the rectifier in that spot
FrontSideBus   [25 Nov, 2018 at 08:12 AM]
Certainly looks like any other round package full bridge rectifier regardless.

Comment 1 to 9 of 9
Page: 1

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