I replaced the worn out CCFL lamp in the TDS210 with a strip with 8 white smd 2835 diodes and a 500ohm potentiometer. 8 LEDs are soldered to a 9 cm strip of laminate with a width of 3 mm - every 11 mm. I powered it from the negative 24V present inside. I disconnected the CCFL converter by desoldering the choke coil. Perfect effect!
@@NearFarMediaIf you want to desolder the LEDs from the LED strip left, you need to have a few in stock. It will get damaged sometimes. There was an idea for green LEDs, but in the end I used white-natural ones. I cut the copper on the laminate with a scalpel: 10mm copper/1mm gap/10mm copper/1mm gap/....
This is a good tip for these older displays. I noticed the colour balance was virtually identical, but the brightness increase was definitely worth the time for a DIY fix. It likely wouldn't be worth it if a professional had to do it for a person, but as a DIY, 100% worth while
Seven years later it is still a great video. I just purchased an old TDS210 with dim display and will follow the steps shown in the video. One thing I don't understand why replace the CCFL on the scope shown? IMHO it was bright enough.
It's actually much easier if you disconnect the CCFL from the white wire or red wire that attaches to the black housing, that way you can slip it out as a whole piece and then desolder, opposed to desoldering or using clippers near other parts.
Thanks, I try to replace or repare a back light TDS3000. The MB3778 neon switch control maybe breakdown. Maybe it's possible to replace by led device (low voltage)
Check the voltages from the power supply, the capacitors in these units can go bad. Besides that, check out eevblog.com foums, there have been a few of these repaired there.
@@NearFarMedia I'm an elec engg but i got nervous checking out these expensive things but I'll try my best.... But Thanks for at least tell me where to look at 2.I never came across the problem with cap, how to check if cap is fault or not?
Unfortunately not, there is no colour information from the chipset at all so nothing to work with there. Some other devices with a VGA or video output can have a colour conversion done, but this isn't one of those unfortunately. Even the screen capture to PC using the optional communications module is a black and white image. I think the only way to do it is to use the communications module to download the information to an excel spreadsheet then recreate the screen using the colours of your choice. It's more work than I want to spend so I haven't tried it yet. :)
I can't really thank you enough for the guide, just bought a tds220 locally at $75 and while maybe a bit expensive, oscilloscopes sell for really high prices at my country, so this was a real bargain. The thing is its screen looks terribly faded, so I would attempt to change the CCFL to LED, maybe with some extra 12v power supply wired to the connector and a custom made led strip
You can get LED upgrade kits from ebay that would work really well I think. Check these links for more info: www.ebay.com/sch/i.html?_nkw=led+ccfl+kit th-cam.com/video/smrMoIpvYTk/w-d-xo.html
@@NearFarMedia just got a couple non-working tablets with damaged lcd screens as well for pretty cheap, I will attempt to reuse the lcd panel construction of the smallest one for the oscilloscope, they come with good 9v led Strips. Thanks for the info!
$75 for a TDS220 is still a pretty good bargain, even now. Tek gear tends to hold it's value, because it is good quality. The TDS220 is showing its age, but it was cutting edge at the time it was released and is still a good general purpose 100MHz scope now. It virtually led the pack for for making the 10 to 1 the nrom. Ie 1Gigasample for 100MHz.
Hello, nice fixup! I have the exact same problem on my TDS 220. The service manual is stating that the CCFL is working on 1270V peak to peak whereas the CCFL that I plan to buy from www.ccflwarehouse.com is working at 280V with starting voltage of 520V AC. Is it going to work ??
+Catalin Popescu can you provide a link to the service manual and a datasheet for the part you want to use? It's hard to say exactly, but the ratings on ccfl tubes should be pretty interchangeable for a given size.
Here's the service manual : www.tek.com/oscilloscope/tds210-manual/tds200-series-service-manual. Please check backlight troubleshooting chapter, it says 1270V pk-pk and 450Vrms for the CCFL power supply. The CCFL I plan to buy specs are here : www.ccflwarehouse.com/30x10fuspcc.html. Thanks a lot for checking !
I replaced the worn out CCFL lamp in the TDS210 with a strip with 8 white smd 2835 diodes and a 500ohm potentiometer. 8 LEDs are soldered to a 9 cm strip of laminate with a width of 3 mm - every 11 mm. I powered it from the negative 24V present inside. I disconnected the CCFL converter by desoldering the choke coil. Perfect effect!
Nice work!
I might have a go with mine one day, now I have some LED strip left over from converting my THS720 scopes to LED.
@@NearFarMediaIf you want to desolder the LEDs from the LED strip left, you need to have a few in stock. It will get damaged sometimes. There was an idea for green LEDs, but in the end I used white-natural ones. I cut the copper on the laminate with a scalpel: 10mm copper/1mm gap/10mm copper/1mm gap/....
This is a good tip for these older displays. I noticed the colour balance was virtually identical, but the brightness increase was definitely worth the time for a DIY fix. It likely wouldn't be worth it if a professional had to do it for a person, but as a DIY, 100% worth while
Yeah, I love this scope as it's so easy to just turn on and use. Short boot time, simple controls and really compact.
For day-to-day use it's great.
Seven years later it is still a great video. I just purchased an old TDS210 with dim display and will follow the steps shown in the video. One thing I don't understand why replace the CCFL on the scope shown? IMHO it was bright enough.
Again a great video Jared!! My TDS220 needs exacly the same, tubes and BNC connectors, and then i need to look at the grounding too!.. Thanks!
It is a good scope, I still use mine all the time. It's just really easy to turn on and use.
Hi! Nice job but now it's time to make a video with the replacement of the CCFL with a LED strip!
It's actually much easier if you disconnect the CCFL from the white wire or red wire that attaches to the black housing, that way you can slip it out as a whole piece and then desolder, opposed to desoldering or using clippers near other parts.
Thanks, I try to replace or repare a back light TDS3000. The MB3778 neon switch control maybe breakdown.
Maybe it's possible to replace by led device (low voltage)
Yeah, I've seen a few LED back light conversions done on old LCD's. You can get a kit from ebay for it.
I need to repalce the polarizer of my textroniks lcd, have you made a videos for it?
Hi,
I haven't needed to replace my polarizer yet so no videos so far, sorry.
Suddenly there's appear a blank screen on my tds220. Nothing showing up. It was suddenly happened one day. Can you say what could happen?
Check the voltages from the power supply, the capacitors in these units can go bad.
Besides that, check out eevblog.com foums, there have been a few of these repaired there.
@@NearFarMedia I'm an elec engg but i got nervous checking out these expensive things but I'll try my best.... But Thanks for at least tell me where to look at
2.I never came across the problem with cap, how to check if cap is fault or not?
Excellent video !! One question, is it possible to install a color display on this oscilloscope model?
Unfortunately not, there is no colour information from the chipset at all so nothing to work with there.
Some other devices with a VGA or video output can have a colour conversion done, but this isn't one of those unfortunately.
Even the screen capture to PC using the optional communications module is a black and white image.
I think the only way to do it is to use the communications module to download the information to an excel spreadsheet then recreate the screen using the colours of your choice. It's more work than I want to spend so I haven't tried it yet. :)
Thank for showing us how to replace tube light of this oscilloscope.
Nice, did not know that they made them so small, never opened one. ty.
I can't really thank you enough for the guide, just bought a tds220 locally at $75 and while maybe a bit expensive, oscilloscopes sell for really high prices at my country, so this was a real bargain. The thing is its screen looks terribly faded, so I would attempt to change the CCFL to LED, maybe with some extra 12v power supply wired to the connector and a custom made led strip
You can get LED upgrade kits from ebay that would work really well I think.
Check these links for more info:
www.ebay.com/sch/i.html?_nkw=led+ccfl+kit
th-cam.com/video/smrMoIpvYTk/w-d-xo.html
@@NearFarMedia just got a couple non-working tablets with damaged lcd screens as well for pretty cheap, I will attempt to reuse the lcd panel construction of the smallest one for the oscilloscope, they come with good 9v led Strips. Thanks for the info!
$75 for a TDS220 is still a pretty good bargain, even now. Tek gear tends to hold it's value, because it is good quality. The TDS220 is showing its age, but it was cutting edge at the time it was released and is still a good general purpose 100MHz scope now.
It virtually led the pack for for making the 10 to 1 the nrom. Ie 1Gigasample for 100MHz.
I am looking for a replacement diplay with the same quality of original one. Chinese substitute are less brilliant and difficult to adjust
I have a screen issue with the same instrument and I would appreciate your help. How can I contact you?
I would suggest visiting the eevblog.com forums to post your question there. You'll get a lot more people who can help you than just me. :)
what is the PN of LCD ?
What is the diameter and length of the glass tube ?
Did you bother to read the video description at all?
@@NearFarMedia opps, missed it.
I need tektronics TDS 220 display, can anyone guide me
Hello, nice fixup! I have the exact same problem on my TDS 220. The service manual is stating that the CCFL is working on 1270V peak to peak whereas the CCFL that I plan to buy from www.ccflwarehouse.com is working at 280V with starting voltage of 520V AC. Is it going to work ??
+Catalin Popescu Can you provide links to the service manual and the data sheet of the CCFL you want to buy?
It's hard to say exaclt
+Catalin Popescu can you provide a link to the service manual and a datasheet for the part you want to use?
It's hard to say exactly, but the ratings on ccfl tubes should be pretty interchangeable for a given size.
Here's the service manual : www.tek.com/oscilloscope/tds210-manual/tds200-series-service-manual.
Please check backlight troubleshooting chapter, it says 1270V pk-pk and 450Vrms for the CCFL power supply.
The CCFL I plan to buy specs are here : www.ccflwarehouse.com/30x10fuspcc.html.
Thanks a lot for checking !
Is it a good scope?
Good Job.
Yo, Where did you find the replacement CCFL from? Dimensions too please so I can do the same swap to mine.
I got a 2.6mm 100 mm length from a CCFLwarehouse.com