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Quasar
Quasar
Senior Member
Last Activity: 10-27-2010, 08:58 PM
Joined: 09-21-2010
Location: NJ
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  • Quasar
    replied to Toshiba 57H83 Convergence
    in Troubleshooting TVs and Video Sources
    Re: Toshiba 57H83 Convergence

    Then I'll be sure to challenge any recommendations to use them for parts. Actually, I'd refuse the package and call my credit card company and initiate a chargeback. "Yes, I'm willing to pay the shipping, but to return an unopened package I should be entitled to a FULL refund." Understand that a chargeback will -COST- them $25-35 whether they are right or wrong. I'm not nice to companies who try to stick it up my ***.

    I gave you 3 names of sites with cheaper and absolutely real Sanyo chips. No faker is going to the trouble...
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  • Quasar
    replied to Toshiba 57H83 Convergence
    in Troubleshooting TVs and Video Sources
    Re: Toshiba 57H83 Convergence

    I'd return the wrong parts and get the correct ones. Call the supplier (you never said who) now and tell them the error. A lot of those policies are to scare folks off. Few people ever get hit with a restock fee when they are swapping a wrong number for a correct one. Mistakes happen and they (supplier) know it. They'd have a bad rep if they whacked everyone a restock fee.

    Google STK394-250. There are a bunch of better prices. MCM, bdent (B&D), Liberty.

    LOOK at the casing in those pictures. Knockoffs will not look like...
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  • Quasar
    replied to Samsung SyncMaster 940T blows inverter fuse
    in Troubleshooting Computer Displays
    Re: Samsung SyncMaster 940T blows inverter fuse

    @PCBONEZ:
    The 2 caps given, are too tall (30mm). Clearance is limited to 20mm.

    I noticed that the Capxon sheet seemed "off", but couldn't place what was wrong. From what I see, it seems they take caps from everyone/everywhere, some from this pile and some from that, just to build a sheet.

    Q
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    Last edited by Quasar; 10-27-2010, 09:19 AM.

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  • Quasar
    replied to Samsung SyncMaster 940T blows inverter fuse
    in Troubleshooting Computer Displays
    Re: Samsung SyncMaster 940T blows inverter fuse

    I'd trust Panasonic any day. If they say they squeezed it in there, I believe it. There's a lot more trust in their manufacturing.
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  • Quasar
    replied to Samsung SyncMaster 940T blows inverter fuse
    in Troubleshooting Computer Displays
    Re: Samsung SyncMaster 940T blows inverter fuse



    You're welcome!

    Samxon lies too. I checked Rubycon, and they confirm the other 3 manufacturers info I posted, 680/25 is the top end for 10x20. Above that it's 12.5mm.

    If 4 MAJOR manufacturers all match fairly close on their sheets, odds are that those that claim better are full of it. More from less? Something has to give when you pack that much capacitance into that smaller can. I'd bet either OV surge limit or lifespan. There's more foil and less electrolyte.

    Q

    ...
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    Last edited by Quasar; 10-27-2010, 12:32 AM.

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  • Quasar
    replied to Samsung SyncMaster 940T blows inverter fuse
    in Troubleshooting Computer Displays
    Re: Samsung SyncMaster 940T blows inverter fuse

    I'd bet #3 & 4 can be 12.5 mm. You'll have to lay #2 over a bit, then #4 will fit. #3 can exceed the board edge and a little bend to the wire going to the resistor and you should be okay. Mount them a little proud of the board so you can get some movement.

    2 things with the pics - The first one is a nice top down... on the transformer, so I may not be seeing the cap spacing correctly. Same with the second pic as it's straight on with the board edge, and not the cap tops to show the lack of clearance. It seems you have...
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  • Quasar
    replied to Asus P4C800-E Deluxe rejuvenation
    in Troubleshooting Desktop Motherboards, Graphics Cards, and PC Peripherals
    Re: Trust Asus P4 boards - no way

    Mine's been in use for 5 years, overclocked (2.8 running @ 3.1), and nary a hitch. They were made right at the beginning to the middle of the bad cap era. Maybe -they- cut costs, but more likely, costs were cut on -them-, unknowingly. The blame can be spread around, but in the end, I think they (Asus) and the industry were snookered. Someone on here said that the majority of the issues with XP at the beginning, were more likely due to the bad caps, than flaws in the OS.

    They still bring a pretty penny on eBay.

    I have a...
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    Last edited by Quasar; 10-26-2010, 09:15 PM. Reason: Because I want to. :p

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  • Quasar
    replied to Toshiba 57H83 Convergence
    in Troubleshooting TVs and Video Sources
    Re: Toshiba 57H83 Convergence

    Dangerous waters for some.
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  • Quasar
    replied to Samsung SyncMaster 940T blows inverter fuse
    in Troubleshooting Computer Displays
    Re: Samsung SyncMaster 940T blows inverter fuse

    Going by the CapXon KF sheet, that dimension does not exist in the 1000/25 cap. 13x20 is what the sheet says with 45 mOhms and 1650 mA for that -value-. Yeah, it's a "special" order, but it isn't "real" as follows.

    Going by what we've learned here at BCN, the "more correct" values for your cap, going by the KF sheet, would be indicated by the can -size- of 10x20mm. That, by the sheet, is the 820/25 (small) and the 680/25 caps can sizes. The values range from 52 to 65 mOhms & 1320 to 1400...
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    Last edited by Quasar; 10-26-2010, 08:29 PM.

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  • Quasar
    replied to Toshiba 57H83 Convergence
    in Troubleshooting TVs and Video Sources
    Re: Toshiba 57H83 Convergence



    Not taking any credit, just glad to assist. PlainBill is the source of that site to me.

    There are other threads about these module's problems, but not on this specific model. Use the forum search for "toshiba convergence". >>> 14 threads !!

    Follow kc8adu's advice here. Look for his and Wizard's responses in the other threads from the search.

    Q...
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  • Quasar
    replied to Toshiba 57H83 Convergence
    in Troubleshooting TVs and Video Sources
    Re: Toshiba 57H83 Convergence

    I tried to register after the link you provided in my Panasonic Plasma thread, and it said "By invitation only from a member".

    Q
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  • Quasar
    replied to Toshiba 57H83 Convergence
    in Troubleshooting TVs and Video Sources
    Re: Toshiba 57H83 Convergence

    Schematics: [url]http://elektrotanya.com/[/url]

    Enter Brand and Model. There are 2 listed for yours. Downloads are limited to 2 per 24 hours, so you're in luck.

    QRe: Toshiba 57H83 Convergence<br /> ...br /> <br /> QRe: Toshiba 57H83 Convergence

    Schematics: [url]http://elektrotanya.com/[/url]

    Enter Brand and Model.
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  • Quasar
    replied to Replacement caps for Antec SP-450?
    in Troubleshooting Power Supplies and Power Supply Design
    Re: Replacement caps for Antec SP-450?

    I have -this- PSU that I recapped, so if you have a problem sourcing a cap just say so.

    I had to split the order between Mouser and Digikey at the time. Now it might be fully doable from Mouser.

    Q
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  • Quasar
    replied to Replacement caps for Antec SP-450?
    in Troubleshooting Power Supplies and Power Supply Design
    Re: Replacement caps for Antec SP-450?

    Had to run off, so I couldn't elaborate more on the filter and cap bit.

    Using different ESR caps on the filter in/out can cause an increase in ripple on the output. Staying with either PW/PW or FM/FM (or any other comparable cap grade in pairs) is the way to do these filters. I've done these with FM, PW, FC, HZ, HE, PM, KY, and LXY on all the outputs and never had any problems. Loaded ripple was <30mV.

    FM's can be cheaper and now I noticed Mouser is starting to stock them. Some even less expensive than Digikey....
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  • Quasar
    replied to Replacement caps for Antec SP-450?
    in Troubleshooting Power Supplies and Power Supply Design
    Re: Replacement caps for Antec SP-450?

    Stay with the same grade of cap on the output filters. Don't use a PW on the input to the filter and an FM on the output. Or the other way around, either.

    Filters are typically "pi" filters and consist of an input cap, a coil on a straight rod core or a toroid (round), then an output cap. Sometimes there is more than one on the output and they'll be in parallel to each other. Their capacitance will be "additive", so 2 - 2200uF caps in parallel will have an effective capacitance of 4400uF.

    Any "decent"...
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  • Quasar
    replied to Viewsonic went from bad to worse
    in Troubleshooting Computer Displays
    Re: Viewsonic went from bad to worse

    Model number of unit and maybe the part number on the board?

    At least we can try and look up the info...

    Q
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  • Quasar
    replied to 10volt x 50uF +105°C Radial Capacitors
    in General Electronics Technical Discussion
    Re: 10volt x 50uF +105°C Radial Capacitors

    Not a problem. Everyone has to start somewhere. You've picked a great place!

    If you supply the manufacturer, capacitance value, voltage, and series (which is -usually- 2 or 3 letters together near the temp rating) we can start helping you find the proper replacement.

    As much info as possible regarding the item you are repairing, the make and model, and any pictures you can provide of the bad cap(s) and circuit board, is a good start.

    Q
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  • Quasar
    replied to MOSFET 70T03GJ where to buy?
    in General Electronics Technical Discussion
    Re: MOSFET 70T03GJ where to buy?

    @stj - It'd be nice if you'd just give the URL or the search results, which in this case result in no matches.

    @wenter -

    Let's have some pics of this blown chip, the area where it was, the caps surrounding it, and the board model number.

    The motherboard or the MOSFET didn't/don't "blow caps". It is some underlying problem either in the brand and series of caps, or a bad PSU, for instance.

    Most likely the other MOSFET of this set is damaged, as they typically operate as a pair. When one...
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  • Quasar
    replied to Replacement caps for Antec SP-450?
    in Troubleshooting Power Supplies and Power Supply Design
    Re: Replacement caps for Antec SP-450?

    Single-sided board and no via's. Mobo's are double-sided with via's connecting the trace from one side to the other and most are multi-layered (traces inside the board). Hence the suck the heat right out of your iron.

    Also, your attachments didn't work. You have to post the attachments then go back and link them if you want the pics in the post. Not necessary.

    Q
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  • Quasar
    replied to MOSFET 70T03GJ where to buy?
    in General Electronics Technical Discussion
    Re: MOSFET 70T03GJ where to buy?

    UK Ebay - USED:

    [url]http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=170552622359[/url]

    Q

    [EDIT - Went digging on the shelf and found a ASUS A7VBX-MX mobo that has - 4 - of them on it.

    Also has an AMD Duron DHD1600DLV1C 1.6GHz and 256Mb of Infineon DDR333 onboard.

    Make me a decent offer on me pulling the transistors and how many, or the whole thing and you handle the pull.

    Shipping is from NJ, USA - For USA, figure $10 for the whole board, or $2 for just the tra...
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    Last edited by Quasar; 10-23-2010, 10:02 PM.

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