Electronics > Repair
test transformer that has modular connectors with small holes
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tooki:

--- Quote from: smk279 on July 04, 2024, 08:47:55 pm ---Here's a pic So you're saying there's only ac coming from the transformer

--- End quote ---
If you don’t know this, you simply aren’t yet knowledgeable enough to be doing anything inside a mains-powered device safely. Please stop before you injure yourself.

Also, a “modular connector” is a specific type of connector (used as phone and Ethernet jacks and plugs, primarily). There is nothing of the sort here, and they don’t have anything to do with power, so we don’t really have any idea what your question is even really talking about.

Edit: Your posting history makes it evident that you are trying to do repairs FAR beyond your current skill level. But it also shows a history of asking for help, then not doing what is suggested, and of giving no responses at all to questions asked by people who try to help. This, combined with lousy photos and your refusal (even after being told to) to use punctuation, mean that your questions are unnecessarily difficult, and then pointless to answer anyway…
smk279:
There's no voltage at the main secondary black and blue plug
tooki:

--- Quote from: smk279 on July 06, 2024, 05:10:42 pm ---There's no voltage at the main secondary black and blue plug

--- End quote ---
This is word salad. Totally meaningless. Please use the correct words for things, in the correct way.
BILLPOD:
Good Morning Smk279,
Get a pair of needle-like probe extensions like these:  https://www.amazon.com/Litoexpe-Pieces-Needle-Non-Destructive-Multimeter/dp/B0C3GN5L9Q?source=ps-sl-shoppingads-lpcontext&ref_=fplfs&psc=1&smid=A1GK56K5UMTC3C :popcorn:
Stray Electron:

--- Quote from: BILLPOD on July 07, 2024, 01:42:19 pm ---Good Morning Smk279,
Get a pair of needle-like probe extensions like these:  https://www.amazon.com/Litoexpe-Pieces-Needle-Non-Destructive-Multimeter/dp/B0C3GN5L9Q?source=ps-sl-shoppingads-lpcontext&ref_=fplfs&psc=1&smid=A1GK56K5UMTC3C :popcorn:

--- End quote ---

  Those "holes" are not designed to be test points and there many not be any accessible electrical connection in them regardless of the probe size.  The OP is clearly out of his depth here and no one should be encouraging him by recommending different types of probes or probe substitutes.

   OP, you can, and should be, testing the transformer by taking resistance readings of the windings with the POWER OFF and disconnected. Otherwise there is a good chance that you're going to electrocute yourself!
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