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Equipment Repairs => LCD TV forum => Topic started by: zeb2001 on July 03, 2012,14:40:32

Title: Akura ABLDVD2626W-HDID no sound CV109H V1.2 board
Post by: zeb2001 on July 03, 2012,14:40:32

Hi All,

Got a couple of these TVs which have a quiet clicking sound coming from the speakers. The board is a CV109H V1.2 & the audio IC is a TPA3123D2. The 24V supply is OK, no caps look bulgy either. This IC is a SMT one & is difficult to probe around so I am hoping this is a replace component X type fault. Any ideas?

Title: Re: Akura ABLDVD2626W-HDID no sound CV109H V1.2 board
Post by: fix2003 on July 04, 2012,02:43:10

is this the set with chokes L5 and L6 beside audio out chip

if so Replace chokes

Title: Re: Akura ABLDVD2626W-HDID no sound CV109H V1.2 board
Post by: zeb2001 on July 04, 2012,13:46:02

Thanks, yes it has L5 & L6. What value/type etc are these?

Title: Re: Akura ABLDVD2626W-HDID no sound CV109H V1.2 board
Post by: fix2003 on July 06, 2012,02:53:31

do not know the values are they marked ?
just found a note on another forum to check them
and a note to say contact
Denis Mott, Technical Manager of Akura UK
http://akura.uk.com/customer_support.htm

Title: Re: Akura ABLDVD2626W-HDID no sound CV109H V1.2 board
Post by: zeb2001 on July 10, 2012,15:40:00

Hmmmm, don't think it's my problem as they are not open circuit!

Title: Re: Akura ABLDVD2626W-HDID no sound CV109H V1.2 board
Post by: drh on March 14, 2014,08:18:55

Did you ever find the cure to this problem?

I have one of these Akura TV's doing exactly the same, no sound just a clicking coming from the speakers, so it appears to be a common fault judging by my searches, I have found similar reports but as yet no answers to the problem.

[EDIT]

Sorry, scrap that, FIXITNOW was correct, it is the L5 & L6 chokes. In my case, only L5 which looked slightly browned compared to L6 next to it. I removed L6 from the logic board and without a new part, retested the TV with the damaged L5 out and the sound came back but of-course only through one channel. I'm sure as soon as I get a new choke, the sound will be restored to both channels.

Only problem is, I don't know what the value of the part is, the link above to Akura support is dead.

Title: Re: Akura ABLDVD2626W-HDID no sound CV109H V1.2 board
Post by: Turnip on March 14, 2014,10:57:58

Hi drh,

Why not check inductance of the good one and use something similar from scrap ? - LCR meters are pretty cheap these days.

Good Luck - Chris.

Title: Re: Akura ABLDVD2626W-HDID no sound CV109H V1.2 board
Post by: drh on March 14, 2014,11:15:31

Thanks, I will do.