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Main => Monitor/Video Forum => Topic started by: yukonblaze on November 01, 2014, 05:27:41 pm

Title: WG7400 ticking
Post by: yukonblaze on November 01, 2014, 05:27:41 pm

Got a freebie and monitor ticking. B+ test at tp202 7-10 vdc. Any help appreciated. No neck glow. Game plays blind.
Jason

Title: Re: WG7400 ticking
Post by: kardenm on November 05, 2014, 11:30:49 am

I'm no expert but tp202 should be 117v.  Something gone in the power supply section.  :)

Many threads here on that symptom.  do a search of "ticking".

Title: Re: WG7400 ticking
Post by: Sarver Systems on November 05, 2014, 03:53:45 pm

flyback? Again, by far not an expert, but just my guess.

I agree, lots of posts here about "ticking".

Title: Re: WG7400 ticking
Post by: yukonblaze on November 06, 2014, 01:59:34 pm

Have read every thread but not any I could find on low reading at tp202. Going to pull it and check on bench with a little more room.
Thanks

Title: Re: WG7400 ticking
Post by: MonMotha on November 11, 2014, 03:36:02 am

Generally speaking, something's shorted when you've got a ticking SMPS chassis.  Culprit is usually the vert IC or HOT but can be anything including the parts back in the power supply (output diodes, even the switch FET).  A common test is to isolate the power supply from the rest of the board and load it with a light bulb to test separately.