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Last edited by tonyuk; 03-04-2014, 03:53 PM. -
Re: lcd19-229 stand by light on and off
OK please check voltages on: pin 2, pin 5, and pin 7
Pins are counted as such, starting from dot:
Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
For service manual, schematic, boardview (board view), datasheet, cad - use our search.Comment
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Re: lcd19-229 stand by light on and off
hi tom that parts is burnt would that be all that the problerm is ? if so do you have link for that as cant find a match
pin 2 = 12.83 pin 5 =000 pin 7= 5. my dot is where pin 1 isAttached FilesLast edited by tonyuk; 03-04-2014, 04:15 PM.Comment
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Re: lcd19-229 stand by light on and off
It's actually AIC2857F. Is it physically burnt? Your results indicate it is not functioning, in the very least.
One on eBay, they're about £5 each
http://www.ebay.co.uk/itm/1PCS-Brand...item3cc84b952e
but plan on about 2 weeks to get it from China.
See diagram here:
http://www.analog.com.tw/p2_6_detail...idTableName=05
Pin 2: input voltage, this is OK (12V from PSU)
Pin 5: output feedback, should be 1.25V - not OK indicating the output voltage is not present
Pin 7: on/off command, it is >2V indicating the main board processor says "I want power" but converter does not function. (Like a light switch which is on but with a blown light bulb.)Last edited by tom66; 03-04-2014, 04:20 PM.Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
For service manual, schematic, boardview (board view), datasheet, cad - use our search.Comment
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Re: lcd19-229 stand by light on and off
From the pictures, it looks OK to me.Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
For service manual, schematic, boardview (board view), datasheet, cad - use our search.Comment
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Re: lcd19-229 stand by light on and off
Other places to buy
http://www.ebay.co.uk/itm/ic-sop-8-A...-/400538572096
http://www.aliexpress.com/item/AIC28...449252694.html
BTW, dot always marks pin 1.Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
For service manual, schematic, boardview (board view), datasheet, cad - use our search.Comment
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MacBook Air turns on without battery connected, no green or orange light comes on, I connect the battery and it shows battery with lightning and it restarts constantly.
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Im hoping someone might be able to give me some idea of what may be wrong with my Monitor Audio RSW12 Sub.
Ive owned it since new in around 2002, so would really like to keep it running if I can, it was the first ‘decent' bit of audio equipment I ever purchased and is a little sentimental.
The issue I had was that it would power up with the red light, but sometimes the green light would not come on and I would get no bass from it. If the green light did come on though, I would get sound out of it.
I have already tried replacing all of the... -
Hi
Im hoping someone might be able to give me some idea of what may be wrong with my Monitor Audio RSW12 Sub.
Ive owned it since new in around 2002, so would really like to keep it running if I can, it was the first ‘decent' bit of audio equipment I ever purchased and is a little sentimental.
The issue I had was that it would power up with the red light, but sometimes the green light would not come on and I would get no bass from it. If the green light did come on though, I would get sound out of it.
I have already tried replacing all of the... -
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