Re: techwood 37722hd faulty psu 17pw15-8
I had the same issue, unplugged the eeprom and it fired up.
badcaphunter
Senior Member
Last Activity: 08-25-2020, 08:59 PM
Joined: 01-25-2016
Location: Leeds
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Re: Power Board FSP212-3F01 Problem
Still waiting for the caps, i managed to get standby 5v. no sign of 12v, 24v.
Now that standby is there, when i press the power button i'm getting a pulsing clicking noise, not as loud as a relay, coming from near the bridge rectifier when the standby light goes from red to green, i have also ordered a esr meter and a load of low esr caps.
I dont think that schematic i posted is for this revision as some of the values are slightly different.
This youtube channel has been a great help for me, i would not even consider...Last edited by badcaphunter; 09-05-2016, 10:51 AM.Leave a comment:
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Re: Power Board FSP212-3F01 Problem
I dont have a ESR meter but all of the caps on the secondary side were bloated so i changed what i could, there is still 2 that are bloated, the replacements should be here tomorow...Last edited by badcaphunter; 09-02-2016, 10:27 AM.Leave a comment:
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Re: Power Board FSP212-3F01 Problem
Yes they are all underneath the board on the primary side
Q7 - BC848
Q9 Q11 - BC858
ZD4 - BCX55C4V7 4.7V
R65 - 5.6 Ohm ResistorLeave a comment:
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Re: Power Board FSP212-3F01 Problem
The main blue cap is going up and down from 346v to 350v, and i'm getting 4v to 7v on pin 1 of IC1Leave a comment:
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Re: Power Board FSP212-3F01 Problem
Should i remove all the white glue, is it conductive?Leave a comment:
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Re: Power Board FSP212-3F01 Problem
Im still waiting for some caps but i changed what i could.
I will post some more pics later...Last edited by badcaphunter; 09-02-2016, 09:59 AM.Leave a comment:
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Power Board FSP212-3F01 Problem
I picked up a Hannspree tv with this power board, i have replaced Q9 Q7 Q11 ZD4 and R65, i have got a replacement for Q4 but its reading ok.
I have no standby or anything at all on the secondry side and i'm getting -120/-150 on the primary side heatsinks.
Pin 4 on IC4 should be about 14v but i'm getting -120
The bridge rectifier is reading fine. -
Re: Recommended replacement led for backlight--No Good!
I got some LG Innotek 7030 LEDs from AliExpress and had a few fail as soon as i powered up the TV, try and power the set up without assembling and let it run for half hour.Leave a comment:
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Re: LG/Optica 7074c / 42" SmartTV
Thanks for the help everyone.
I should have got some solder paste really, one thing to note if you heat the strip from underneath it is easier to work and causes less stress on the LEDs and i would not try
this without a rework heat gun.Last edited by badcaphunter; 09-01-2016, 06:33 AM.Leave a comment:
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Re: LG/Optica 7074c / 42" SmartTV
Problem solved, must have been dodgy LED's or a bad connection. TV is back up and running... after killing 20 LED'sLast edited by badcaphunter; 08-31-2016, 03:35 PM.Leave a comment:
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Re: LG/Optica 7074c / 42" SmartTV
Every time i test it i'm killing a few LEDs each time, i'm wondering if these are duds or the problem lies somewhere elseLeave a comment:
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Re: LG/Optica 7074c / 42" SmartTV
yes, i have double and triple checkedLeave a comment:
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Re: LG/Optica 7074c / 42" SmartTV
I got the LEDs and replaced 6 that looked physically burnt but now when i power the tv on i get a high pitched noise from the inverter board and most of the LEDs go out again.Leave a comment:
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Re: Smd rework - Solder balls squeeze out
Jessa's channel is good for IPhones/Ipads and Louis Rossman's channel focuses on mac book motherboard repairs
IPhones/IPads
[url]https://www.youtube.com/channel/UCPjp41qeXe1o_lp1US9TpWA[/url]
MacBooks
[url]https://www.youtube.com/user/rossmanngroup[/url]Re: Smd rework - Solder balls squeez...1US9TpWA[/url]Leave a comment:
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Re: Asus K53SV
Check around the DC jack for cold solder joints / loose connections.
[url]https://www.youtube.com/watch?v=zbECI4l6HIw[/url]Re: Asus K53SV<br /> <br /> Check ...CI4l6HIw[/url]Leave a comment:
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Re: Sony vaio no onboard display
use a torch on the laptop screen to see if u have pictureLeave a comment:
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Re: Toshiba satellite C70 Bios
Hi Masud, i found this in the toshiba website...Leave a comment:
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Re: LG/Optica 7074c / 42" SmartTV
Thanks for the help guys, i will order the LED's and update in a few weeks, 20-40 days for shipping, i dont want to use anything but the exact parts, not worth the risk with the heat these things put out.Leave a comment:
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Re: LG/Optica 7074c / 42" SmartTV
When i power the set on its 23v for a second then goes up to 75vLeave a comment:
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