Re: Battery Charger / switch Mode PSU Diode ID?
all fixed and running again using the schottky diodes.
Thanks for all the help fellas
tw2005
Badcaps Legend
Last Activity: 03-04-2024, 02:56 AM
Joined: 10-02-2011
Location: QLD
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Re: Battery Charger / switch Mode PSU Diode ID?
and this was that thermistor, got the diameter wrong, was in fact 20mm
20S050M...Leave a comment:
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Re: Battery Charger / switch Mode PSU Diode ID?
Well I found this with G5. Just so happens to be 40V 1A...Leave a comment:
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Re: Battery Charger / switch Mode PSU Diode ID?
I just tried reverse bias with a 1k resistor and at 10V and 19V it did not conduct. Forward it behaved like a std diode and had a V drop of 0.28V...Leave a comment:
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Re: Battery Charger / switch Mode PSU Diode ID?
I had a feeling you'd suggest a power supply and resistor to test, just hoping not to have to do that.
MOSFETS are toast as are all the supporting components underneath .
basically I got this going but used an underated Bridge (15A) in place of the 25A as a quick test while I waited for the correct one to arrive.
The charger turned on as normal but no output, it needs to sense a load to activate.
being impatient I selected 6Amps output and hooked a battery up expecting...Leave a comment:
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Re: Battery Charger / switch Mode PSU Diode ID?
Nice
Some good heads in here. I think you're pretty right with that thermistor. Although it's had an explosion I did meter it out and was about 5.5 ohms with lead resistance 5.2. So I was working on 5 ohms and 25mm diamater to get close, but no luck.
Datasheet says o50M is 11amps and that rings true with the 12A fuse.
yes it is a mess inside now for sure.
as for that diode, I was originally thinking fast switching schottky but when I got hits for G5 as a zener, that's when I thought...Last edited by tw2005; 10-18-2019, 10:20 PM.Leave a comment:
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Re: Battery Charger / switch Mode PSU Diode ID?
On the mains power in. mains in, fuse on active side, then on neutral passes through a choke, varistor across the A/N on other side then the neutral routes through the thermistor (in series) then to the 600v 25a bridge input.
VDRUS? I thought this was a thermistor being in series and varistor was across mains? There's one of them too
R55 is the thermistor location
...Last edited by tw2005; 10-18-2019, 09:08 PM.Leave a comment:
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Re: Battery Charger / switch Mode PSU Diode ID?
actually, just remembered I have another problem, the thermistor it blew a hole in it it took the part number off.
Not sure what would help but it's a 50amp battery charger and a 12amp fuse on the mains
25mm in diameter approx
...Leave a comment:
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Re: Battery Charger / switch Mode PSU Diode ID?
awesome, was hoping you were still around. How do I decipher that sheet?
G5 on that = 3V zener
thanks also, this is the one I ordered and have. But again how do we know?
So the general take is it is a zener just the voltage I need to get right.
These do feed off into windings of a small transformer...Leave a comment:
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Battery Charger / switch Mode PSU Diode ID?
Hi guys,
Need some help identifying a diode sitting on the FETs. It's sitting off the gate of each 13N50 FET.
I've been pretty lucky working these SMD markings in the past but I'm stuck with this one. Could these be Zeners?
I've been out of the loop here for ages now but I'm currently working on a Projecta IC5000 intelligent battery charger. In the construction process they've used this cheap crappy glue that breaks down and / or corrodes resulting in both track damage and shorts.
I had already patched this up for someone... -
Re: Panasonic TNPA5335 YSUS Difficult Fault
Honestly don't know, out of the loop now but what's th efull history? sevearl attempts by yo or before you? is the ysus correct version for this model TV?Leave a comment:
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HI tw2005, please can you take a look in my topic, thank you.
[url]https://www.badcaps.net/forum/showthread.php?t=70693&page=4[/url]https://HI tw2005, please can you ta...3&page=4[/url] -
Re: Panasonic tc-p50c2 1 blink
Nce, every now and then we get lucky. i've fixed a couple of the 2010 series now with a reflash from a working board. Had one where I fixed it, then flashed the original file to break it again and then back to working for fun. Did a comparison from a dump and a single character or values was incorrect in the file.
Best bit, the baords are not avaialble otherwise it was toast , but what a waste, nothing electrically wrong just crap data which cost me nothing to reload. Moved on now away from Plasmas, still have a couple...Leave a comment:
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Re: Panasonic tc-50u2 fixed..dark middle screen
Bit of burn in by the looks of it.Leave a comment:
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Re: Another Storm - Another Issue - Panasonic TC-P60GT30 - No HDMI Inputs
Look I'm not sure if you can or how successful but anything that gets a spike and is connected to the TV can do damage whether it be antennas or the the cable box. There maybe something available but I'm not familiar with cable TV so again someone local may know. I've seen big power boards with ethernet and coax points fitted for surge protection, never used or know how reliable that may be....Leave a comment:
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Re: Another Storm - Another Issue - Panasonic TC-P60GT30 - No HDMI Inputs
Yes it would look that way. No, it won't produce error blinks for this. HDMI are quite vulnerable in storms.
To tell a story I picked up a late model Panny LED Smart TV that had a dead PSU from a storm.
Ran perfect for first 24 hrs, then HDMI ports quit then DEAD processor. all that happened fairly quickly after a startup next morning.
From what I've seen most of these boards the HDMI appears to be integrated into the main chip. But if it has a separate...Leave a comment:
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Re: Transistors 45F122 & FGP4536
You did say you were pretty sure of the answer.Leave a comment:
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Re: TNPA 5330 Q621, Q622, Q623 issue
See if this blog reveals anything, sounds like he had similar issues plus additional parts replaced to get it running.
[url]http://alpengeist-tvrepair.blogspot.com.au/2015/04/panasonic-tx-p42st30e-tnpa5330-board.html[/url]Re: TNPA 5330 Q621, Q622, Q623 issue...tnpa5330-board...Leave a comment:
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Re: TNPA 5330 Q621, Q622, Q623 issue
Maybe not manufacture but they have no problem in sanding the casing and restamping them so essentially not what they present them to be. I had a good run for a while....Leave a comment:
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Re: Panasonic TC-P65GT50 8 LED blink failure
no, but you could try a download of the TC-P60GT50 which would do for the most part. don't be surprised if you can't enlarge it claerly.
So you've checked all transistors on this and none shorted?
It would appear these boards are around.
[url]https://encompass.com/item/9555994/Panasonic/TXNSS1QYUUPS/Pc_Board[/url]
I'd be tempted to get this one and add the capacitor if you are really stuck.
[url]http://www.shopjimmy.com/panasonic-txnss1rcuu-ss-board.htm[/url]Re: Panasonic...Leave a comment:
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