Re: Toshiba surface mount capacitor identification
Thank you R_J for taking the time to read and reply....
pnb
Member
Last Activity: 11-01-2020, 10:25 PM
Joined: 04-16-2013
Location: QLD
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Re: Toshiba surface mount capacitor identification
Yes the purple caps get 1.5v on them when the powersupply is constantly cycling and failing to come up, so I am pretty sure they are 2.5v caps. But I am totally stumped as to the manufacturer, series or capacitance.
I have spent a few hourson web searches and come up empty.Wouldn't you know that that is the one I cannot identify and that is the one that is OL.
Ok... maybe.. can anyone confirm they are Oscon SVPC series at 560uf?
[ATTACH]179693[/ATTACH]
I honestly don't...Last edited by pnb; 07-10-2018, 08:36 AM.Leave a comment:
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Toshiba surface mount capacitor identification
Hi,
Can anyone help me id these caps? I think the black ones marked 68 EFK (B62 / F62) Panasonics and I think that despite their different markings they are both 68uf and 25v, although both mine measure around 300uf in circuit.
The red and the purple ones have me stumped though.
I am guessing the reds, marked FP 26AB 331 6.3v are 331uf 6.3v, and I get a measurement in circuit of around 300uf so I think I am right (I would like to 'know' though)
And the purples marked 216 PC 560 2.5, I think are probably 2.5v, but what value? These all... -
Re: Missing part of circuit board. long shot question
No tamper switch in this model. 8 blue flashes if pretty much the worst possible problem you could have with these as far as I can see.Leave a comment:
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Re: Missing part of circuit board. long shot question
PDP-R06G Power supply schematic.
[ATTACH]72250[/ATTACH]
[ATTACH]72251[/ATTACH]Re: Missing part of circuit board. long shot question
PDP-R06G Power supply schematic.
[ATTACH]72250[/ATTACH]
[ATTACH]72251[/ATTACH]...Leave a comment:
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Re: Missing part of circuit board. long shot question
Thread is closed, Have been contacted by a local tech who saw an advert of mine and sent me a detailed schematic of this board and I managed to rebuild it using wire and old resistors.
Voltages test within spec but I have a different problem now.
8 blue flashes = mainboard interface problem.... somewhere.... groan... Oh nooooo.
This project might be headed for landfiill!Leave a comment:
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Re: Missing part of circuit board. long shot question
That was the first thing I did and when I came up empty I thought I would ask on here to see if someone else has one of these boards that they can photo the circuit paths of.Leave a comment:
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Missing part of circuit board. long shot question
Hi all,
Have a new project: A Pioneer PDP-R06G Media recieiver that someone else 'had a go at' before passing it onto me.
Trouble I have is a triangular part of the power supply circuit board is missing!!
I cannot find a circuit diagram on the net apart from a high level service manual. I cannot even find a photo of the reverse side of this board on the net.
So...I know it's a long shot, but does anyone have one of these media receivers lying around (or a similar model) and can photo the reverse side of this board?
Or...Last edited by pnb; 10-09-2013, 04:24 AM. -
Re: Exploded transistor. Can anyone suggest replacement?
Thanks for the help everyone, the 2SD1815 arrived and is the correct replacement part.
I re-soldered all cracked joints and tested that all resistors were close to spec. Tested diodes, but did not bother testing the small caps, and did not know how to test the 9-leg transformer so just hoped it was still ok..
Re-soldered the main resistor in as far from the board as possible to give it more opportunity to shed heat, and drilled a few small holes in the metal cover for a bit of airflow.
...Last edited by pnb; 09-06-2013, 07:55 AM.Leave a comment:
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Re: TDK 517 component - can anyone identify picture
That circuit - AC (only) is non-operational. Blank screen. It looks like the component(s) that were supposed to provide AC input protection, did not.
This project is not going to be revisited.Leave a comment:
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Re: Exploded transistor. Can anyone suggest replacement?
Thanks for the help everyone!
Will post update when project completed.Leave a comment:
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Re: Exploded transistor. Can anyone suggest replacement?
Ok, Think I found some of those locally at X-on... Ebay OS shipping is a rip off and long wait to boot so I was hoping for a local source..
[url]http://www.x-on.com.au/InventoryDetails.aspx?id=1167896&s=1&C1=_&C2=_&C3=_&C4=_&C5=_&manufacturer=ON%20Semiconductor&product=2SD1815T-E[/url]
Not sure what the extra letters mean though, so I guess I will go ahead and get one of those and try it out.Re: Exploded transistor. Can anyone ...<br /> <br />Leave a comment:
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Re: Exploded transistor. Can anyone suggest replacement?
I found one for around $40 including shipping from OS, but that just seems like "F.O.P". Surely there most be something compatible available locally for under $5?
Any thoughts on the chance of success on scratching around on Gumtree for a free unwanted VCR etc and the likelihood of that being a common part in vfd display drivers?
<<<<
What about this D1815 TO252 ? Is that compatible with that suffix?
[url]http://www.idevopen.com/index.php?main_page=product_info&products_id=14734[/url]...Last edited by pnb; 08-29-2013, 01:53 AM.Leave a comment:
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Re: Exploded transistor. Can anyone suggest replacement?
budm,
Phoned up my local Jaycar and they dont have 2SB1215 or 2SD1815 available either. None on ebay.
I would have thought google could turn up a list of compatible parts, but no luck.
Could be an oscillator circuit, although I dont know how you can tell that. Seems VFD are driven by high frequency pulses..
[url]http://hem.passagen.se/communication/vfd.html[/url]Re: Exploded transistor. Can anyone ...y local JaycarLast edited by pnb; 08-29-2013, 01:40 AM.Leave a comment:
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Re: Exploded transistor. Can anyone suggest replacement?
Heres the circuit. Seems a little under-engineered to me, almost every joint is bad.
[ATTACH]69813[/ATTACH]
[ATTACH]69814[/ATTACH]Re: Exploded transistor. Can anyone suggest replacement?
Heres the circuit. Seems a little under-engineered to me, almost every joint is bad.
[ATTACH]69813[/ATTACH]
[ATTACH]69814[/ATTACH]...Leave a comment:
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Exploded transistor. Can anyone suggest replacement?
Hi all,
This time I am trying to repair the power supply to a vacuum fluorescent display in an instrument cluster.
Apart from heavy heat damage and a completely wobbly resistor there is a transistor that has exploded.
Seems to have markings of D 18*5, maybe D1815 and below that S (or 5) in left corner and maybe a 64 or 614 in lower right corner.
This is a 17 year old part and I cannot seem to find a replacement for a D1815 anything, if that is what it is.
Can any of the knowledgeable posters on here suggest a replacement transistor... -
Re: TDK 517 component - can anyone identify picture
Didnt do it for any remuneration. Family.Leave a comment:
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Re: TDK 517 component - can anyone identify picture
Thanks I did de-solder that safety cap and it tested according to spec. Pretty sure the problem is way down the line closer to logic IC's so I put it all back together and gave it back to the owner.Leave a comment:
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Re: TDK 517 component - can anyone identify picture
yes, it did measure around 1.1k ohm and all other functions worked.
However the meter doesn't belong to me, it belongs to my uncle and I was just trying to fix it up for him. He still uses it for the other functions.Leave a comment:
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Re: TDK 517 component - can anyone identify picture
Uodate.
Didnt have a service manual but found a manual for a fluke similar looking/numbered fluke (867 instead of 865) (865 has a board numbered 867 in it) and that circuit point was identified as a :
Thermistor, POS,1.1k, 20% 25c.
Got one from local electronics shop and it looked nothing like that part (much slimmer, different colour [colour probably - wrong voltage? ) soldered it in and.... no change, so yes, not a fundamental part causing the problem even though it is burnt.
...Last edited by pnb; 08-14-2013, 07:41 PM.Leave a comment:
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