Re: Seeltech ST2468DHD 24" LCD HD TV Standby only - help needed!
Hi vaneno,
Thanks, it is always a pleasure to see someone was able to use our inputs successfully.
Regards,
Joste
joste
Member
Last Activity: 02-17-2020, 10:24 AM
Joined: 08-02-2011
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Re: Seeltech ST2468DHD 24" LCD HD TV Standby only - help needed!
Hi Tom66,
Yes, you're right, all diodes where checked and they measured OK. But, once the current hits hard (on startup), they kinda "change their mind". Who knows, maybe the caps (also looking good, no leak, not bulged) have lost a lot of their capacity, so the switch couldn't give current needed to power up the CPU.
Whatever, I just can't take my eyes off the screen. I've missed my TV so much and I really am happy to have it back.
Yes, talking...Leave a comment:
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Re: Seeltech ST2468DHD 24" LCD HD TV Standby only - help needed!
Good news! The set has been successfully repaired!
I had a telephone conversation with a tech from the company that is official importer and wholeseller of this brand and he was very kind to share his knowledge and experience. He said that this failure is very common for this model and that in more than 60% of all cases it is the diodes around the coils on the left hand side (SMPS). These two 1N4001 have been looking good both in Standby mode and disconnected. But, the catch was in what happens...Leave a comment:
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Re: Proline DVD player + combined surround sound system
I'd spend another penny and replace that filter cap anyway. I've had a case when I have changed all dry and bulged caps in PSU except that one and my Philips HTS 3100 didn't want to start DVD reader! Sometimes it didn't want to turn on neither! I was surprised how much does it mean to the stability of PSU. I want to say that if you had so many elements to change in PSU, than this cap must have been fatigue and even damaged as well, so it probably should be replaced. That's how you're gonna have a long term operational...Leave a comment:
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Re: Proline DVD player + combined surround sound system
So Tom66, would you call it "problem solved"?
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Re: Seeltech ST2468DHD 24" LCD HD TV Standby only - help needed!
To be honest with you, I'd sell the whole set for a hundred quids. There's a small superficial scratch on the lower lefthand part of the panel, but you can't even notice it once the screen goes on.
I know you're not interested, I wrote this for other folks who might be reading this thread.
I'll post panel reference later, and power supply/invertor board is still in mint condition!
Not to forget IR RC, still with original batteries!
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Re: Proline DVD player + combined surround sound system
Well, that can be your first try.
If cleaning doesn't help, I'd suggest to go for much trickier operation: adjusting laser focus (if possible).
But, first things first - lens cleaning (but be careful with pressure applied and no liquid!).Leave a comment:
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Re: Seeltech ST2468DHD 24" LCD HD TV Standby only - help needed!
Nope, everything is SMD and not a single socket and chip that can be removed. I guess this makes the whole operation hardly possible.
Simply, I got out of patience and if I don't find some "instant" solution (like exchange MB or something), I'll give it up.
I'll give a call to importer and wholesale distributor to hear their say. Maybe thay still can help a bit, who knows.Leave a comment:
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Re: Proline DVD player + combined surround sound system
So Tom66, this looks like your laser has gone half-blind (somewhat out of focus): when the disc is inserted, the unit tries to read out the data (type of the disc, sessions etc.) but the beam is not focused enough to clearly read it, so it gives up after a minute. When the disc is absent, the unit spins twice or trice and reads "no disc". This is quite normal.
My question: did you try plain audio CD instead of DVD? Sometimes lasers can not read one, but still manage to read other type...Leave a comment:
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Re: Does anyone recognize this board?
@digge,
Thanks for your answer!
The sticker on the back reads the same:
P/O: 909H1565
M/O: 1.212.01.06
C/N: (not readable)
D/N: 2009(and further numbers not readable)
I also tried to google out some result using these numbers, but had no luck.
That's why I counted on visual memory of this forum's members.
The link you provided does show a MB very similar but not identical to mine. Maybe I should underline that my MB is capable of working with external...Leave a comment:
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Does anyone recognize this board?
Hi all!
My LCD TV got broken and I would need your help to identify the mainboard from the photo attached.
To make long story short, I think that EEPROM dump must be reloaded.
Since this TV set is almost certainly a rebadge of other TVs, I would need you guys to tell me who made this design, to what brand does it belong? In what other TVs can it be found? Googling with board reference CV209L didn't give any result.
To get complete information on my TV, please visit my previous thread:
[url]https://www.badcaps.net/forum/showthread.php?t=15739[/url]... -
Re: Seeltech ST2468DHD 24" LCD HD TV Standby only - help needed!
What do you think of bad (or damaged) eeprom dump? Can it cause such a problem? I am prone to believe so. Any advice?
Thanks again.Leave a comment:
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Re: Lcd tv lg 32lc51
Rev 1.2, you can see it on the second photo attached above. There's a part number, too!
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Re: Proline DVD player + combined surround sound system
Hi Tom66,
I would change that big primary filter cap anyway. Sometimes it can cause weird things. If you have a buzzing sound around 50Hz, this would be my lucky guess.Leave a comment:
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Re: Seeltech ST2468DHD 24" LCD HD TV Standby only - help needed!
Yes, I know what you mean, Tom. In fact, on the user manual there's not a single word about helpdesk, nor any instruction if the set gets broken! There is just some name and address of (presumably) importer and/or wholesales distributor. Not a single telephone number. Well, I know: when I bought the TV I didn't ask questions about maintenance, I was really self-confident, but now what?! Never mind, I'll track it down and find some contact, I'll try to get that service manual and then we'll fix it (if only BGA...Leave a comment:
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Re: Samsung LN55B650, No power, standby LED on
For the beginning, try with the bulged guy (1000uF/25V). Even better: put 35V instead 25V since there's a lot of space on the board. Don't forget that all caps should be 105°C, just in case
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Re: Seeltech ST2468DHD 24" LCD HD TV Standby only - help needed!
No doubt they both work good. There are two connectors, one for IC RC and other for top buttons.
If you take look of my previous photo (better resolution than this one), you'll find these connectors at the top of the MB. Blue connector (the third one from left to right) is for RC, and white one next to it (fourth from left to right) is for top buttons....Leave a comment:
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Re: Seeltech ST2468DHD 24" LCD HD TV Standby only - help needed!
Yes, but not more often than with RC....Leave a comment:
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Re: Seeltech ST2468DHD 24" LCD HD TV Standby only - help needed!
To answer your questions first:
This is not a positive ground chasis.
When the TV powers on, then it works without any problem, everything is there: picture, OSD, sound, backlight... Then, after half a minute or so it goes Standby just like that. Afterwards, no matter how hard I try, I can't power it on again. If I disconnect the mains and try ON button, it just might power on again, but not more often than once or twice per day. So, let's call it an "intermittent fault".
I have...Last edited by joste; 08-06-2011, 01:28 PM.Leave a comment:
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Re: Seeltech ST2468DHD 24" LCD HD TV Standby only - help needed!
In fact, my first thought was to change the mainboard, but where (and how) to find it? I'm not bad myself in searches over the Net, but never managed to find anything about this MB; Can you give me any model or reference to search for? That would be great.
Other thought: since we don't live too far away from each other, I'd be glad to mail this MB for some hot air resoldering if you'd accept?...Leave a comment:
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