Re: BUSH LED2497ODVDFHD, 17PW80 V2, Dead!
Take Note of Michael Dranfield's comments- A Television magazine veteran,who knows his stuff!
Take Note of Michael Dranfield's comments- A Television magazine veteran,who knows his stuff!
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Please Do Not PM My Page Asking For Help Badcaps Is The Place For Advise, Page Linked For Business Reasons Only. Anyone Doing So Will Be Banned Instantly !
https://www.facebook.com/Telford-Tel...7894576335359/Comment
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Re: BUSH LED2497ODVDFHD, 17PW80 V2, Dead!
Hi vinceroger69, if i`m totally honest, it`s been on my wish lish for a while now, butmy confidence in using one is very low. i can build pc`s no problem, and replace blown caps, but fault finding as such is my weak point. i will invest in one this weekend if i get the chance, it`s been a long time coming.
many thanks for the warm welcome.Comment
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Re: BUSH LED2497ODVDFHD, 17PW80 V2, Dead!
hi vinceroger69, whilst i never got back to you from the end of last year, i did purchase a multi meter and learnt how to use it for specific tests etc. i have now had the time to do some more testing on the power board that was problematic.
the results were conclusive that d712 and d713 diodes needed replacing, i have done this job this morning and all is good again with the tv.
whilst i appreciate your offer to help back in december 2016, i found it better to teach myself as the information stays lock in.
thanks again and all the best to you, i may be come knocking again one day.
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Re: BUSH LED2497ODVDFHD, 17PW80 V2, Dead!
Glad you managed too get the tv working again and thanks for the update as this may help other forum users repair there sets too.Comment
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Re: BUSH LED2497ODVDFHD, 17PW80 V2, Dead!
Hi there im new and just been looking to see if there is a resolution to my TV issue with the 17pw80 board. unlike most on here, however, mine seems to be a little different in that the TV is NOT totally dead. i DO get a flashing stand by light (green from memory, its a Bush badged TV) but nothing else. has this issue ever been seen before, as the common fault with the diodes, seems to leave the TVs totally dead. can anyone shed a light on this?
Im trying to teach myself basic electronics (im a mechanic by training, and theres so many throw away parts that could be repaired...) as i hate to throw things out that could be repaired economically with a little time and some cheap(ish) parts!Comment
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Re: BUSH LED2497ODVDFHD, 17PW80 V2, Dead!
flashing led maybe a firmware issueComment
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Re: BUSH LED2497ODVDFHD, 17PW80 V2, Dead!
thanks. not sure how i would go about fixing that. it was our daughters TV in their bedroom (theyre 5 and 7) and it worked fine prior to the house move. after the move (literally to the house next door, not by our choice) where the TV was literally carried out from 1 bedroom and into the new room, the TV worked perfectly for a couple of days then just stopped, hence my thinking it was an internal fault. it would be GREAT if it was an easier fix than that though!
thinking about this some more, can it even be done when the TV wont come out of stand by?Comment
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Re: BUSH LED2497ODVDFHD, 17PW80 V2, Dead!
Is it "normal" for these 24" sets to have the most annoying and horrible high pitched whine on the speakers? Its only just audible, but its constant and annoying!
I've just peeked at the circuit and it uses a PT2333 Class D for the speaker output, which explains a lot (how small is that audio chip!!), and there's nothing standout obvious wrong on the PCB, I just find it hard to believe someone would design something that makes such a horrible noise all the time.Last edited by Harvey; 08-28-2018, 04:23 PM.Comment
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Re: BUSH LED2497ODVDFHD, 17PW80 V2, Dead!
Does it have audio line out? Do you get high pitch on audio line out also? Does the pitch change when making the backlights level adjustment?Never stop learning
Basic LCD TV and Monitor troubleshooting guides.
http://www.badcaps.net/forum/showthr...956#post305956
Voltage Regulator (LDO) testing:
http://www.badcaps.net/forum/showthr...999#post300999
Inverter testing using old CFL:
http://www.badcaps.net/forum/showthr...er+testing+cfl
Tear down pictures : Hit the ">" Show Albums and stories" on the left side
http://s807.photobucket.com/user/budm/library/
TV Factory reset codes listing:
http://www.badcaps.net/forum/showthread.php?t=24809Comment
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Re: BUSH LED2497ODVDFHD, 17PW80 V2, Dead!
Headphone out seem clean enough, its driven from a separate line drive IC. Plugging in headphones 99% mutes the speakers, but doesn't stop the noise!
I'll try and get the scope out the back of the spare room and see if I can figure anything out. I'm not liking the look of the speaker amp chips being powered off the 5V_VCC rail...Comment
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Re: BUSH LED2497ODVDFHD, 17PW80 V2, Dead!
I've seen (well, heard) other Vestel units with this flaw, so it doesn't really surprise me.Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
For service manual, schematic, boardview (board view), datasheet, cad - use our search.Comment
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Re: BUSH LED2497ODVDFHD, 17PW80 V2, Dead!
Hi all, have read the rules and hope bumping/necroposting this thread is OK (seems to have been bumped a few times over the years!). I've just replaced the 5 diodes on my 17PW80 board with UF5402s and got it powering up again, but I'm now getting quite loud coil whine from the power inverter on the board (SMP-C2776, TR700 on circuit diagram). Could it be related to the new diodes? If not I'll just try pushing some thermal glue into it since replacement inverters are £20 on eBay, and this TV's barely worth more than the glue...Comment
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Re: BUSH LED2497ODVDFHD, 17PW80 V2, Dead!
could be a faulty capacitor.Comment
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Re: BUSH LED2497ODVDFHD, 17PW80 V2, Dead!
Something probably loading down circuit.I assume no responsibility for any stupid suggestions I might post.Comment
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Re: BUSH LED2497ODVDFHD, 17PW80 V2, Dead!
Sorry about the slow reply and thanks for the tips - I actually just put the TV back together and can barely hear the whine, so I think it was either like that already or isn't an issue anyway!Comment
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HI all. Just a note for anyone that has one of these TVs.
Make: Bush (China)
Model: BLED42FHDAE.
Symptoms: Half screen went dark, then tv wend dead. No power lights. Fuse checked ok.
First thing checked was standby 5v: Present @ 5.1v.
PS_ON signal from main board: Present @ 4.5v.
I suspected the power supply to be in a foldback / crowbar condition after the screen going out, so I disconnected the power to LED Backlight board (Part ER643). Now standby light is on and TV responds to remote power on - light goes green.
Disconnected the LEDs from the... -
Hi all,
As the title suggests, how can I be sure that my EC chip is really dead?
I've recently gotten into this hobby of laptop repairs, and have successfully brought back to life a couple with some easy fixes, mostly shorted caps.
Now I'm working on HP Probook 455 G8, that had some "devil" run around on 3V line, burning a bunch of stuff. Luckily I have a dead 455G7 (for spare parts) so I managed to fix it (swapped burned parts) to a point that it will charge (both on barrel jack and usb-c), but it doesn't want to turn on. There is a 3V3 on a keyboard... -
Hello everyone hope all doing well!
I have this PSU (GPS450-AA delta oem) around for like 4-5 years and I had it recapped early 2020 or 2021 with mostly UCC KY and Nichicon PW's. The bulk was and still is fine, the original Ltec's were bloated and empty. The previous issue was some major coil whine noise and at times random shutdowns when going idle. Today it started tripping the mains breaker and I think I have dead APFC mosfets (20N60C3). Right now upon checking I have the Q1 and Q3 FETs dead so far and I guess those are responsible for the PFC circuit. The only thing I care is If there... -
Hello, today I'm working on this lovely MSI Raider GE75 gaming laptop which I bought to flip. Unfortunately, I believe the CPU is toast but I wanted a second opinion before I chucked it into my spare parts bin. I will not have most tools with me today as I'm away from my workbench but I have the basics (a good multimeter, a horrible iron, a solid screwdriver, and my trusty thermal cam). I do not have the original 230w charger, but I have a Dell 180w which was sold with the device and reportedly "worked fine for them".
Specs: I7-10750H, RTX 2060, 32GB RAM (unknown manufacturer)... -
Hi, I was recently given a Bush Smart TV by a friend and the main board seems to be hanging on by a thread.
Before we get to that, my first obstacle was figuring out the model number since the back sticker has gone for a walk. Upon taking off the back case, I noticed the following Vestel parts, 17MB95m mainboard, 17IPS71 (what I'd assume is power supply) and a VES420UNVL-3D-S02 display panel. After doing some research I think the TV I have is a Bush ELED42240FHDCNTD3D, based on the matching image here (https://www.manualslib.com/manual/11...td3d.html#manu...
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