Re: TPV LCD panels - LCD cell correlation
Unfortunately I have no picture - I'm just going by what the service menu reported as there was no fault causing the need to open the monitor.
The back of the monitor showed that the whole monitor was manufactured by TPV Electronics, not just the panel, so I think that they might be using a panel known only to themselves. The Panda model numbers look close enough that I think it probably is one of theirs.
Thanks for your help.
s675
Member
Last Activity: 03-20-2023, 01:34 PM
Joined: 09-05-2015
Location: Essex
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Re: TPV LCD panels - LCD cell correlation
Thanks for this useful info. I can't work out what this one is:
TPM270WF1LF3L02C
Could they have changed their panel naming?Leave a comment:
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Re: Exactly same capacitors from NCC and Nichicon
I'm aware that they both are manufacturers, but somebody is copying somebody else here, with or without permission. I would not think very highly of whichever one is the copycat. I'd expect actual measured spec averages if they are indeed not the same cap design....Leave a comment:
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Re: Exactly same capacitors from NCC and Nichicon
You make a good point. The specs (including lifetime) all match.
Here are the possibilities that I have thought of:
[LIST][*]One company makes the capacitors, and the other company rebrands them with their company name.[*]They are different capacitors, and one of the companies used the competitor's specs as placeholders and never changed them.[*]They both manufacture this capacitor design in their own factories. The original company agreed to share the exact formula etc under license.[/LIST]- Re: Exactly same capacitors
Last edited by s675; 10-16-2021, 03:06 PM.Leave a comment:
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Re: Decipher part of this please: 4.7U_0805_25V6K
My ideas so far for the meaning of 6K:
[LIST][*]Withstand voltage (6kV)[*]"Kemet code" (seen in some documents from Kemet)[*]6 being unknown and K being 10% tolerance[*]Date code accidentally included[*]Reel quantity accidentally included (probably not, most are 5k, 10k etc)[/LIST]- Re: Decipher part of this please: 4.7U_0805_25V6K
My ideas so far for the meaning of 6K:
[LIST] - Withstand voltage (6kV)
- "Kemet code" (seen in some documents from Kemet)
- 6 being unknown and K being 10%
Leave a comment:
- Re: Decipher part of this please: 4.7U_0805_25V6K
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Re: SMD electrolytics
Just a somewhat related note that if an SMD cap doesn't have vent, it may still still be aluminium electrolytic and not polymer. Some people seem to think that no vent must mean that it is polymer.Leave a comment:
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Re: Trouble ID'ing C3 Cap.
Here's the part number scheme I found. Doesn't seem to tell you anything....Leave a comment:
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Re: Trouble ID'ing C3 Cap.
Do you know the dimensions and lead pitch?Leave a comment:
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Re: Trouble ID'ing C3 Cap.
Could be the Lelon RGA series.
RGA = series
105C = temp rating
H245 = ?
M = 20% tolerance
Other Lelon RGA show things like H136 and H736.Leave a comment:
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Re: Quality half-height mSATA SSD
Closest *new* item I could find is 64GB ([URL="https://www.ebay.com/itm/294138031677"]link to item[/URL]).
Closest *used* item I could find is 128GB ([URL="https://www.ebay.com/itm/403162470122"]link to item[/URL]).
If you have enough space available, you could use a half-height converter that converts the MSATA slot to a SATA port.Re: Quality half-height mSATA SSD
Closest *new* item I could find is 64GB ([URL="https://www.ebay.com/itm/294138031677"]link to item[/URL]).
Leave a comment:
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Re: Cheap Ebay Stuff: the Good, the Bad, and the Ugly – Post Your Reviews
I have some similar looking leads that came with a cheap-ish clamp meter. The quality doesn't actually seem too bad, but one of them snapped where the coloured dot is, at the end nearer to the tips. I suppose that there are a lot of lookalikes, with some being better built than others.
On the subject of cheap stuff, many years ago I bought some long VGA cables on eBay, from a same-country seller. After plugging one in, it didn't work unless wiggled a bit. I inspected...Leave a comment:
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Re: Any more info on counterfeit Nichicons?
I think the problem generally isn't ESR, it is lifespan and reliability. The fake would probably last far less time.
The short URL doesn't work. At least use a short URL provider that allows preview (e.g. by adding + at end).
I take some notice of bad feedback but generally ignore the good feedback. I have found sites like AliExpress strange with reviews. Many of the (positive) reviews that I have left have disappeared. I imagine that negatives...Leave a comment:
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Re: WARNING: Live heatsinks & single pole on/off switches in switching power supplies
Here in the UK most of our circuit breakers at the main board (consumer unit) are single pole. If the incoming supply before the board is reversed, you end up with the situation where everything remains live.
Our wall sockets have switches but a lot of them are also single pole, so with the reversed incoming connection, you can turn off the PSU switch, turn off the switch at the socket, and turn off the circuit breaker, and the PSU will still be at 240v unless its switch is on...Last edited by s675; 08-29-2021, 08:37 AM.Leave a comment:
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Re: Fake Nichicon PS series?
0.14 ohm ESR, 0.3% Vloss. I suppose that ESR is OK considering the accuracy of the meter. At least they are "real".
I read that scam emails purposely misspell words to ward off those who are paying attention. Though I suppose it's more likely that they simply don't know or care
I have a bag full of various values of small capacitors from AliExpress. Almost every value is a different brand. I have Jwco, HuaHong, JNC, ChangX, JEC, JackCon, Chong, MHC, HongKai, Fujicon and United....Last edited by s675; 10-24-2020, 11:53 AM.Leave a comment:
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Re: Fake Nichicon PS series?
I should say the SEP KBL608 [B]rectifier[/B].Re: Fake Nichicon PS series?
I should say the SEP KBL608 [B]rectifier[/B].Re: Fake Nichicon PS series?
I should say the SEP KBL608 [B]rectifier[/B].Leave a comment:
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Re: Fake Nichicon PS series?
Thanks all!
I took them off and yep, bullseye bung.
Tested at 2112uf on my cheap meter, so at least that's normal.
The other caps on the board are:
2x Jwco 47uf 50v 105c (12.5x5mm)
2x CZF 10uf 50v 105c (12x4mm)
I suppose that they are also not actually 50v?
Also of note is that the SEP KBL608 regulator looks like it has been re-used.
The one thing that actually seems OK is the TDA7293 itself. Alcohol doesn't take the markings off.
I've attached some...Leave a comment:
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Fake Nichicon PS series?
3 or 4 years ago I purchased a TDA7293 amplifier board from eBay.
I have never used it, but I looked at at and noticed that the large filter caps are ostensibly Nichicon PS(M) 2200uf 50v. They measure around 16x26mm (15x25mm?).
I was surprised that a cheap board would come with capacitors like these. The small ones on the rest of the board are various cheap brands.
This is more curiosity than anything else, but I wondered whether they are fake. In particular I noticed the difference in heat-shrink at the top, and the slightly different looking vents.... -
Re: New Members - please post your introductions here
Hello, I am from the UK. Have had an account for quite a while but have not yet made a post! I often end up back here via Google whenever I am researching electronics.Leave a comment:
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