Author Topic: RNIB Sovereign KA-S007 MP3 Player.  (Read 3615 times)

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Turnip

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RNIB Sovereign KA-S007 MP3 Player.
« on: May 19, 2015,07:28:59 »
Hi folks,

Have a couple in where maybe the wrong DC adaptor was used. Correct adaptor 5v -ve centre pin so guess folks have used any old +ve centre pin adaptor and popped what looks like a SMD FET with legend 5567 on the one not totally cremated.

Searched around for 5567 and found nothing, attach a pic. Any thoughts ? - Chris.

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RNIB Sovereign KA-S007 MP3 Player.
« on: May 19, 2015,07:28:59 »

caslad

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Re: RNIB Sovereign KA-S007 MP3 Player.
« Reply #1 on: September 23, 2015,16:06:52 »
Hi,

Just had one of these to look at, the SMD is cracked but the identifier is LTH7 this is the lion battery charger. The one I have is charging the battery but is otherwise dead. I think other things have died as a result of this failing? Sent a message to KingsAudio who import these to see if spare panels are available.

downunder

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Re: RNIB Sovereign KA-S007 MP3 Player.
« Reply #2 on: September 24, 2015,06:19:59 »

Hell, Chris, that's totally buggered. Tried a search at UT Source in you-know-where, who seem to have most everything. 5567 comes up, but has many prefixes e.g. AT, LM, LTC, MPC, PP, SR.

I'm none the wiser for it, and nor are you, but good luck with it.

Bruce

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Re: RNIB Sovereign KA-S007 MP3 Player.
« Reply #2 on: September 24, 2015,06:19:59 »

Turnip

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Re: RNIB Sovereign KA-S007 MP3 Player.
« Reply #3 on: September 24, 2015,13:11:59 »
Thanks Caslad and Bruce,

Trouble is that PS plug is centre negative, and folks use any old centre positive crap and pop the control FET leaving just a black crisp with six pins.

Went through dozens of lists but couldn't sort a device, as suspect it's not a single FET from the wiring, but can't suss what it is, and as it's Chinese, natch' no info.

Have a chum involved with lesser sighted folks, so would naturally like to suss, even though the unit went for only about 25 Quid - Many thanks - Chris.

Turnip

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Re: RNIB Sovereign KA-S007 MP3 Player.
« Reply #4 on: February 11, 2017,12:29:56 »
Hi folks,

Just got a working one in - LTH7 chip is LTC4054 and 20 for 2 quid inc post from China. Realise that polarity reversal possibly duffs up other bits (why didn't they fit a series diode) but only that chip appears burnt, and at only 5v. Newer version might incorporate something - haven't yet checked - Chris.

Attach pics of original and later version

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Re: RNIB Sovereign KA-S007 MP3 Player.
« Reply #4 on: February 11, 2017,12:29:56 »

 

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