Akai LCT3201AD


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Akai LCT3201AD

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jhh2j
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Feb 1, 2012, 4:27 AM

Post #1 of 9 (1479 views)
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Akai LCT3201AD	Can't Post

I recently replaced three capacitors on the power supply board; however, I accidentally reversed the polarity of the capacitors. When I plugged in the TV, I heard a surging sound. Now, there is absolutely no power to the TV. Not even a standby light. Any ideas as to what has happened? Thanks.

jts1957
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Feb 1, 2012, 8:48 AM

Post #2 of 9 (1471 views)
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Re: [jhh2j] Akai LCT3201AD [In reply to]	Can't Post

You applied power with the electrolytics installed backwards!

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jhh2j
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Feb 1, 2012, 7:25 PM

Post #3 of 9 (1460 views)
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Re: [jts1957] Akai LCT3201AD [In reply to]	Can't Post

Unfortunately, I did install capacitors reversed by accident. Do you have any idea as to what might of happended? Like I said, I heard a surging sound. Also, none of the capacitors blew or bulged...
Thanks.

mel
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Feb 1, 2012, 10:44 PM

Post #4 of 9 (1453 views)
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Re: [jhh2j] Akai LCT3201AD [In reply to]	Can't Post

Normally, an electrolytic cap installed backwards will explode. Apparently some other component (hopefully a fuse) went first.

jts1957
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Feb 2, 2012, 6:13 AM

Post #5 of 9 (1449 views)
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Re: [mel] Akai LCT3201AD [In reply to]	Can't Post

Now the electrons and positrons are probably confused about which way to flow. Wink

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jhh2j
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Feb 3, 2012, 4:03 AM

Post #6 of 9 (1438 views)
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Re: [jts1957] Akai LCT3201AD [In reply to]	Can't Post

Is there anything I can do to revive the PSU, or is it trash?

Ron.M
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Feb 3, 2012, 8:44 PM

Post #7 of 9 (1432 views)
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Re: [jhh2j] Akai LCT3201AD [In reply to]	Can't Post

jhh2j;....

I do not work on LCD,LED or plasma TVs , but I can give you very limited help....
That said....
You may have blown the new caps....
Even tho they don't look bad or are not bulged they can be blown internally...
They are cheaper than a new PSU or TV....
Before you toss it , I'd suggest you get another set of caps & install them CORRECTLY....
Then check/replace the fuse & give it a go...

Good Luck.... Sly

....

Later...Ron.M... Cool

...
Veteran & Retired TV technician

usman0092
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Feb 4, 2012, 3:18 PM

Post #8 of 9 (1420 views)
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Re: [Ron.M] Akai LCT3201AD [In reply to]	Can't Post

They usually have them available for downloading at their websites.

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Ron.M
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Feb 4, 2012, 6:49 PM

Post #9 of 9 (1411 views)
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Re: [usman0092] Akai LCT3201AD [In reply to]	Can't Post

usman0092;....

You need to get this fixed;=>....

OR see a shrink !!!!

.....Ron.M.... Cool

....
Veteran & Retired TV technician

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