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Search: Posts Made By: petehall347
Forum: Troubleshooting TVs and Video Sources Yesterday, 05:34 PM
Replies: 6
Views: 72
Posted By petehall347
Re: Seiki SE39UY04 won't turn on - there's a scorch on the power board. Do I resolder

remove old solder and give the connections a good clean so the solder sticks .
Forum: Troubleshooting Audio Equipment 11-14-2019, 07:47 PM
Replies: 12
Views: 119
Posted By petehall347
Re: LG Xboom PK5 demo mode..probably

"Not for sales" might be they are broken waiting to be fixed .
Forum: Troubleshooting Audio Equipment 11-14-2019, 11:27 AM
Replies: 12
Views: 119
Posted By petehall347
Re: LG Xboom PK5 demo mode..probably

maybe there is a firmware update that might fix it ?
Forum: Troubleshooting Audio Equipment 11-14-2019, 09:42 AM
Replies: 12
Views: 119
Posted By petehall347
Re: LG Xboom PK5 demo mode..probably

if that fails try this .
Power off at the mains. Then hold power button on the top of the sound bar and the power on at the mains then
release power button and it should be out of demo mode.
Forum: Troubleshooting Audio Equipment 11-14-2019, 09:39 AM
Replies: 12
Views: 119
Posted By petehall347
Re: LG Xboom PK5 demo mode..probably

try using the reset hole in the rear panel

https://www.lg.com/in/support/support-product/lg-PK5
Forum: General Electronics Technical Discussion 11-13-2019, 04:55 PM
Replies: 23
Views: 251
Posted By petehall347
Re: Why does my Uni-T multimeter not measure anything?

count yourself lucky . i still have 3x 100 meters with lots more damage from doing same thing .
well i say 3 i mean 2 . one got hit with about 20k volts .
Forum: Troubleshooting Game Consoles & Other Weird Devices 11-12-2019, 06:01 PM
Replies: 20
Views: 212
Posted By petehall347
Forum: General Electronics Technical Discussion 11-11-2019, 08:07 AM
Replies: 23
Views: 251
Posted By petehall347
Re: Why does my Uni-T multimeter not measure anything?

so you had it set up for amps then measured volts ? mmmm have done this to my meters in the past and gave up trying to fix and calibrate them .
Forum: Troubleshooting TVs and Video Sources 11-09-2019, 05:21 PM
Replies: 14
Views: 205
Posted By petehall347
Re: Help for identify componenti on Samsung Power supply

i looked up smd spacer .
https://www.topline.tv/Chip_Spacers.html
Forum: General Electronics Technical Discussion 11-09-2019, 10:59 AM
Replies: 36
Views: 301
Posted By petehall347
Re: Shredder very slow to start

transistor looks duff . try shorting emitter to collector and see if relay clicks in .
Forum: General Computer & Tech Discussion 11-07-2019, 07:23 AM
Replies: 38
Views: 3,736
Posted By petehall347
Re: done with m$ windho's

https://fossbytes.com/microsoft-buys-canonical-kills-ubuntu-linux-forever/
Forum: General Electronics Technical Discussion 11-06-2019, 11:06 AM
Replies: 36
Views: 301
Posted By petehall347
Re: Shredder very slow to start

try new solder on those bad joints .
if that doesn't fix it then you may as well change all 3 electrolytic capacitors .
if that hasn't worked change relay driver transistor
Forum: Troubleshooting Audio Equipment 11-05-2019, 05:59 PM
Replies: 2
Views: 72
Posted By petehall347
Re: Dewalt DC012 Shop Radio no Sound

try plugging into aux .
Forum: Troubleshooting TVs and Video Sources 11-05-2019, 05:19 PM
Replies: 26
Views: 338
Posted By petehall347
Re: Sony Kdl-60ex645 bad LED how to use dummy load to trick it?

back in the olden days when screens used them very thin tube lights i used to have some spare ones for such testing purposes .
i guess its easy enough to build a nice test set of led,s .
Forum: General Electronics Technical Discussion 11-03-2019, 04:04 AM
Replies: 2
Views: 63
Posted By petehall347
Re: How to use a SCS not a SCR

https://www.allaboutcircuits.com/textbook/semiconductors/chpt-7/silicon-controlled-switch-scs/
Forum: Troubleshooting Audio Equipment 11-02-2019, 02:10 PM
Replies: 64
Views: 888
Posted By petehall347
Re: Crown Amp DC300A - One channel distirted, other good.

you could try a new one . cant vouch for it .not used this supplier for years but never had anything fail from them . https://nikkoe.com/catalogsearch/result/?q=ua739
Forum: Troubleshooting Audio Equipment 11-02-2019, 11:31 AM
Replies: 64
Views: 888
Posted By petehall347
Re: Crown Amp DC300A - One channel distirted, other good.

you could see if adjusting output offset changes it .
then check q219 and q200 . d200 .
also wouldn't be a bad idea to check input offsets too
Forum: Troubleshooting Audio Equipment 11-01-2019, 10:35 PM
Replies: 64
Views: 888
Posted By petehall347
Re: Crown Amp DC300A - One channel distirted, other good.

waveform looks like positive dc on bad one .it should be ac .
Forum: Troubleshooting Audio Equipment 11-01-2019, 10:33 PM
Replies: 64
Views: 888
Posted By petehall347
Re: Crown Amp DC300A - One channel distirted, other good.

dc voltage marked on schematic for pin 1 and 13 .best check them
Forum: Troubleshooting TVs and Video Sources 10-31-2019, 07:54 PM
Replies: 37
Views: 269
Posted By petehall347
Re: Another LG, Another TCON Issue.. 55LN5100

wondering if say power supply was high voltage it may blow the tcon ?
Forum: General Electronics Technical Discussion 10-31-2019, 04:29 AM
Replies: 30
Views: 425
Posted By petehall347
Re: Improving a slow/fast digital clock

only if its set to do that .mine isnt as i dont trust it
Forum: Troubleshooting Audio Equipment 10-30-2019, 07:49 PM
Replies: 64
Views: 888
Posted By petehall347
Re: Crown Amp DC300A - One channel distirted, other good.

i would give that driver board a good looking at with power off . first solder joints then transistors and diodes and resistors . just compare readings from good channel to bad . remove and test...
Forum: General Electronics Technical Discussion 10-30-2019, 07:32 PM
Replies: 30
Views: 425
Posted By petehall347
Re: Improving a slow/fast digital clock

my mobile phone gains time .
Forum: Troubleshooting Audio Equipment 10-30-2019, 07:30 PM
Replies: 64
Views: 888
Posted By petehall347
Re: Crown Amp DC300A - One channel distirted, other good.

each base emitter junction should drop about 600mv . example 1.2v in 600mv out .
Forum: Troubleshooting Audio Equipment 10-30-2019, 04:26 PM
Replies: 64
Views: 888
Posted By petehall347
Re: Crown Amp DC300A - One channel distirted, other good.

would be worth looking at the drivers voltages . about 1.2v on the bases
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