Re: Sony KDL-70R550A 5 Blinks
My offer of help was for someone who had no blink codes. Could access their tv just couldnt see the screen. Im sorry i can not....
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Re: Mini split PFC baord repair assistance.
here is a overall picture of the electrical workings of this unit.
and the manual
[url]http://www.manualslib.com/manual/748207/Grunaire-Gmu018hxb-2.html?page=37#manual[/url]
i followed the diagnostics all the way. I dont get 310 volts i get 9 volts. Although the reactors tests are good.
Could a faulty reactor ruin the pfc module like it was?Re: Mini split PFC baord repair assi...7#manual[/url]...Last edited by milkman6453; 09-06-2015, 05:32 PM.
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Re: Mini split PFC baord repair assistance.
Well the leg broke fairly easily. Any good way to repair it? Or should i attempt to replace? I think these are programmed so that might not be possible
attempted to repair. Plugging everything back in....Last edited by milkman6453; 09-06-2015, 12:25 PM.
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Re: Mini split PFC baord repair assistance.
I am now getting a dc power supply short circuit error. It is related to the board i repaired or possibly the one below it.
Any tips on locating a short would be helpful!
found this chips leg bonded together with corrosion?
going to try to pick it out.
This is a different board....Last edited by milkman6453; 09-06-2015, 11:55 AM.
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Re: Mini split PFC baord repair assistance.
Well, bad news. I got all my new componetnts soldered in and turned it on.
One of the parts was a IC switch (596-1023-5-ND)
I guess this needs to be programmed? I am getting an e2prom error code from the mini split.
I dont think it is possible to fix this without a reference board.
EDIT
I tried again this time with the compressor plugged in(didnt want to damage it as there is no refrigerant in it)
No error codes!! I need to braze the head units to the condenser and...Last edited by milkman6453; 09-05-2015, 03:42 PM.
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Re: Mini split PFC baord repair assistance.
can anyone offer insight into what type of capacitors i need? There are so many options, and they look so similar to the ones on my board.
Note: None of the numbers come up with anything on the caps.
As well i cannot identify capacitor c104 can anyone offer suggestions on how? I read it out of circuit and got 121 uf
one other thing the resitor r9 has a spot i cant clean, how do i get the value of it?...Last edited by milkman6453; 08-19-2015, 10:18 AM.
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Re: Mini split PFC baord repair assistance.
[url]https://www.acwholesalers.com/Grunaire/30111019-PFC-Module-for-GMU028HXB-3/34381.ac[/url]
that is the best photo i can find of a "new" board.
The only differenc ei can see is the large caps on this one are silver on the bottom/top.Re: Mini split PFC baord repair assi...enc ei can seeLast edited by milkman6453; 08-15-2015, 08:18 PM.
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Re: Mini split PFC baord repair assistance.
also the reason i think it blew is a lizard was on the "IC OFFLINE SWIT" part. [url]http://www.digikey.com/scripts/DkSearch/dksus.dll?Detail&itemSeq=178006704&uq=635752480985888806[/url]
I cant see any fuses so it might have just blown other stuff up.Re: Mini split PFC baord repair assi...85888806[/url]
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Re: Mini split PFC baord repair assistance.
ive got the other components out and the transistors legs without damaging the board. Im going to wait a bit for more input until i make the purchase on new components.
Im still not sure what transistor to buy, any help is greatly appreciated!!
this is the closest info on the transistor i can find
[url]http://www.datasheetcatalog.com/datasheets_pdf/9/0/1/3/9013.shtml[/url]Re: Mini split PFC baord repair assi...thout damagingLast edited by milkman6453; 08-15-2015, 01:19 PM.
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Re: Mini split PFC baord repair assistance.
i found out it was a transistor(first in circuit Q1)
I attempted to de-solder it. ended up breaking it!! The face reads br9013 h r07t...Last edited by milkman6453; 08-15-2015, 12:32 PM.
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