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Louie
Louie, Technician
Category: TV
Satisfied Customers: 2557
Experience:  25+ yrs. experience in the field and 5+ yrs. online, down to component level.
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Coby 3227 does not power on and does not have standby light

Customer Question

coby 3227 does not power on and does not have standby light
Submitted: 1 year ago.
Category: TV
Expert:  Louie replied 1 year ago.

Hi Ashley and welcome to JustAnswer,

Thank you for the question and your patience. Should you still need assistance for information purposes only...

Initially, is the Coby completely / electrically dead?

Have you tried unplugging for an extended period of time? And then plugging back in but using a different power source / outlet?

Customer: replied 1 year ago.
I have tried unplugging for a day or so and retrying . I also tried a different outlet
Customer: replied 1 year ago.
The Tv itself shows no sign of power
Expert:  Louie replied 1 year ago.

I understand and this would indicate an internal hardware issue.

Are you then considering a DIY (do-it-yourself) repair approach?

Customer: replied 1 year ago.
sir I am .
Customer: replied 1 year ago.
I am thinking it has to be two thing ..either the power cord or the power board . Do you have any other suggestions \?
Expert:  Louie replied 1 year ago.

Great on the DIY Ashley!

Do you have access to and familiar with a multi-meter and even perhaps a soldering iron?

Post back with a clear picture of the insides of the TV with the back cover off. Please click HERE.

Expert:  Louie replied 1 year ago.

And agree on the two (2) likely suspects.

Customer: replied 1 year ago.
I have already removed the board . I am not sure if my meter is here .. but Give me a second to get you pictures of the board
Expert:  Louie replied 1 year ago.

No prob.

Customer: replied 1 year ago.
Here is the board (top view)
Expert:  Louie replied 1 year ago.

Appreciate the picture.

First test is on the power cord. Set the multi-meter to Ω and test the continuity of the 2 prongs of the AC plug to the 2 pins of the connector to the power supply board's AC INPUT:

Please post back results / observations of the above once tried.

Customer: replied 1 year ago.
ok Give me a few
Expert:  Louie replied 1 year ago.

Yes please; when able.

Customer: replied 1 year ago.
when the meter is on Ω I only .99 and 1 . when checking the voltage on the is the v~ i get 121.7 -121.8 . the voltage does fluctuate alot when first plugged in .
Expert:  Louie replied 1 year ago.

With the meter set to Ω, what is the reading when the red probe is touched to the black probe?

Customer: replied 1 year ago.
0.00
Expert:  Louie replied 1 year ago.

Red probe to 1 of the prong of the AC plug and the black probe to 1 of the pins of the connector to AC INPUT. What is the reading please?

Try the other

And then repeat with the other prong.

Customer: replied 1 year ago.
I still only get 1 . I showed -9.09 for a second or two and went back to1
Customer: replied 1 year ago.
I purchased a new cord a few days ago . I just put it on and the same thing is happening .
Expert:  Louie replied 1 year ago.

I understand. With the power supply board unplug; how about the fuse; leg-to-leg, what is the resistance?

Customer: replied 1 year ago.
Louie , I went over to my buddy that has a working model like mine ..we used the power supply board and still nothing . what else could it be working board working power cord
Expert:  Louie replied 1 year ago.

Let's try again the earlier request; "...Post back with a clear picture of the insides of the TV with the back cover off..."