Another saved from landfill. Selecting too high a working voltage can result in more ripple due to a higher ESR. My rule of thumb was around 25% greater than the expected voltage, but I used 50% greater many times, many moons ago. Measuring leakage on the original caps may have shown something.
Hi Allen, are you sure about the £1000 thing? Reason I ask is I bought an end-of-sale Marks and Spencer branded Cello 39" set in August 2012, and paid £199 for it. Still had it until a couple of years back when it was dropped and the panel smashed. It was a decent TV with a good picture but the CCFLs were noisy, there was a slight buzz when the set was switched on from new that was noticeable at night with the sound turned down (it was a bedroom set). This was a very good deal at the time but it wasn't "fifth the price of everything else" cheap! As an aside, the "JVC" branded 40" (not Vestel, the Chinese variant) that replaced it, has already developed noise on the audio output, I must pull the back off at some point and check the caps going into the audio chip before it lunches something 😂
The latest sets won't last as long as these ones have. Sadly Hitachi is another one of the once famous japanese brands that no longer makes their own products. Strange how they are so sensitve about having exactly the same values and votage rating of capacitors.
Hitachi didn't make this one either, it's a Vestel. But yes, they're nothing compared to the real Japanese products and Vestel quality has declined over the years in response to aggressive Chinese pricing. Hitachi were one of the first to get out of consumer electronics in the early 2000s anyway. Even 25 years ago a lot of Hitachi stuff was rebranded tat from China.
@@jasejj A sad sign of how the quality of consumer electronics had dropped to the point that if it breaks it will end up in landfill. Having recently retired from the trade after 53 years i had had enough..
@@Barbarapape Problem is it's the consumer that caused this. The Japanese would still be doing their thing if we were still prepared to pay £5-700 for a 50 inch set. But we aren't, so they can't compete anymore. I find it a sad irony that the same younger generation that is so clued-up when it comes to environmental concerns are quite happy to buy cheap stuff that needs replacing after a couple of years. It's horrendously wasteful.
@@jasejj I can only agree, most buyers only look at the price tag will little thought about how long an item will last. Once the supermarkets started selling them it was game over, Vestel took over, then the Chinese undercut them, so both of them now make low priced junk that is not designed to be repaired. Now they want all of us to drive EV's to save the planet and guess which generation are buying them !
the person who bought the Samsung UW17J11VD of me only gave me £20 for it and now selling it for £365 on ebay what a piss take. I say there only worth £85 most.
Hi Allen, love your channel, have been subscribed for some time, I just love how you make every repair look so easy. I would like to ask you, sir, if you don't mind a couple of questions regarding a Samsung 40'' TV that I have been given by a neighbour, who explained in his words, It just went dead, black screen no picture, but still had sound. The TV details are as follows: Model: LE40R74BD. [R] S Type No. BD40EO MODEL CODE: LE40R74BDX/XEU Serial No. AES53SCL900860V Version: SPO1 I've plugged the TV in and connected the HDMI cable from my SKY Box. When I hold a torch up to the screen, I can see the picture faintly in the background. The sound incedently is fine. My questions are: 1. I think it just requires new backlights, or perhaps the constant current driver board could be faulty. 2. If indeed I do need to order new backlights, what information do I need to source the correct backlights. Do I search by TV Model number, or is there some other information required. I'm fairly confident at doing this repair myself. I've been studying electronics for many years as a hobbyist and have all the required tools. Apologies Allen if this is somewhat off subject, but I would appreciate any help you could give to point me in the right direction.
Nice fix Allen, I’d test it after it’s been off for a while as even soldering them can make them work and then not work when it’s cold😊
Good fix Allen, well done. Regards,
Brian
👍👏🏴👍👏🏴
Another saved from landfill. Selecting too high a working voltage can result in more ripple due to a higher ESR. My rule of thumb was around 25% greater than the expected voltage, but I used 50% greater many times, many moons ago. Measuring leakage on the original caps may have shown something.
Super super video thank you Allen. Looking forward to watching the LED conversion.
made when vestel built solid tvs
Hi Allen, are you sure about the £1000 thing? Reason I ask is I bought an end-of-sale Marks and Spencer branded Cello 39" set in August 2012, and paid £199 for it. Still had it until a couple of years back when it was dropped and the panel smashed.
It was a decent TV with a good picture but the CCFLs were noisy, there was a slight buzz when the set was switched on from new that was noticeable at night with the sound turned down (it was a bedroom set).
This was a very good deal at the time but it wasn't "fifth the price of everything else" cheap!
As an aside, the "JVC" branded 40" (not Vestel, the Chinese variant) that replaced it, has already developed noise on the audio output, I must pull the back off at some point and check the caps going into the audio chip before it lunches something 😂
I don't think it was the 50 volt capacitor that make it fail. Probably a bad solder joint or the capacitor was bad.
I do follow my mate vince will drop the comment and link to this video to let him know .
The latest sets won't last as long as these ones have.
Sadly Hitachi is another one of the once famous japanese brands that no longer makes
their own products.
Strange how they are so sensitve about having exactly the same values and votage rating of capacitors.
Hitachi didn't make this one either, it's a Vestel. But yes, they're nothing compared to the real Japanese products and Vestel quality has declined over the years in response to aggressive Chinese pricing.
Hitachi were one of the first to get out of consumer electronics in the early 2000s anyway. Even 25 years ago a lot of Hitachi stuff was rebranded tat from China.
@@jasejj A sad sign of how the quality of consumer electronics had dropped to the point that if it breaks
it will end up in landfill.
Having recently retired from the trade after 53 years i had had enough..
@@Barbarapape Problem is it's the consumer that caused this. The Japanese would still be doing their thing if we were still prepared to pay £5-700 for a 50 inch set. But we aren't, so they can't compete anymore.
I find it a sad irony that the same younger generation that is so clued-up when it comes to environmental concerns are quite happy to buy cheap stuff that needs replacing after a couple of years. It's horrendously wasteful.
@@jasejj I can only agree, most buyers only look at the price tag will little thought about how long
an item will last.
Once the supermarkets started selling them it was game over, Vestel took over, then the Chinese
undercut them, so both of them now make low priced junk that is not designed to be repaired.
Now they want all of us to drive EV's to save the planet and guess which generation are buying them !
the person who bought the Samsung UW17J11VD of me only gave me £20 for it and now selling it for £365 on ebay what a piss take. I say there only worth £85 most.
Hi Allen, love your channel, have been subscribed for some time, I just love how you make every repair look so easy.
I would like to ask you, sir, if you don't mind a couple of questions regarding a Samsung 40'' TV that I have been given by a neighbour, who explained in his words, It just went dead, black screen no picture, but still had sound.
The TV details are as follows:
Model: LE40R74BD. [R] S
Type No. BD40EO
MODEL CODE: LE40R74BDX/XEU
Serial No. AES53SCL900860V
Version: SPO1
I've plugged the TV in and connected the HDMI cable from my SKY Box. When I hold a torch up to the screen, I can see the picture faintly in the background. The sound incedently is fine.
My questions are:
1. I think it just requires new backlights, or perhaps the constant current driver board could be faulty.
2. If indeed I do need to order new backlights, what information do I need to source the correct backlights. Do I search by TV Model number, or is there some other information required.
I'm fairly confident at doing this repair myself. I've been studying electronics for many years as a hobbyist and have all the required tools.
Apologies Allen if this is somewhat off subject, but I would appreciate any help you could give to point me in the right direction.