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Search: Posts Made By: petehall347
Forum: General Electronics Technical Discussion 08-15-2022, 10:14 AM
Replies: 15
Views: 197
Posted By petehall347
Re: Old analog Power Supply needs your advice

2 bridge ones go to the missing transformer
Forum: General Electronics Technical Discussion 08-14-2022, 03:41 AM
Replies: 31
Views: 407
Posted By petehall347
Re: Help me with capacitors replacement

just what i was thinking .
Forum: General Electronics Technical Discussion 08-13-2022, 07:05 PM
Replies: 31
Views: 407
Posted By petehall347
Re: Help me with capacitors replacement

from what i can find about these its happened at least 3 times . its for a cheap welding machine so corners may have been cut building it .
Forum: General Capacitor Questions & Issues 08-13-2022, 04:05 PM
Replies: 15
Views: 324
Posted By petehall347
Re: Indentifying an old exploded cap.

there are 120 ohm on that ebay but i didn't look at the temperature curve .....being as yours seems to be working you could figure it out with a thermometer and heat source .
Forum: General Electronics Technical Discussion 08-13-2022, 03:41 AM
Replies: 31
Views: 407
Posted By petehall347
Re: Help me with capacitors replacement

please show pictures after you have cleaned the pcb
Forum: General Electronics Technical Discussion 08-12-2022, 06:03 PM
Replies: 31
Views: 407
Posted By petehall347
Re: Help me with capacitors replacement

it was a rectifier ..
looks like it needs redesigning to me . its that or needs quality parts .. bridge rectifiers arent fuses or even a good substitute , resistors however ......
Forum: General Electronics Technical Discussion 08-12-2022, 05:36 PM
Replies: 31
Views: 407
Posted By petehall347
Re: Help me with capacitors replacement

https://preview.redd.it/hac4ns2tevv81.jpg?width=2532&format=pjpg&auto=webp&9011d083this might help a bit

...
Forum: General Capacitor Questions & Issues 08-10-2022, 01:58 AM
Replies: 15
Views: 324
Posted By petehall347
Re: Indentifying an old exploded cap.

looks like a thermistor .
Forum: Troubleshooting TVs and Video Sources 08-09-2022, 09:44 AM
Replies: 15
Views: 292
Posted By petehall347
Re: toshiba 50L4333D TV with a LG 32L4300 board low brightness

i don't know .. maybe find the manual and read it
Forum: Troubleshooting TVs and Video Sources 08-09-2022, 01:46 AM
Replies: 15
Views: 292
Posted By petehall347
Forum: Troubleshooting Desktop Motherboards, Graphics Cards, and PC Peripherals 08-08-2022, 02:37 AM
Replies: 5
Views: 161
Posted By petehall347
Forum: Troubleshooting Power Supplies and Power Supply Design 08-06-2022, 03:59 PM
Replies: 17
Views: 538
Posted By petehall347
Re: ATX PSU SL-500 Short circuit can't find where? Transformer?

throw the safety light bulb away and keep blowing everything up first try .
:poof:
Forum: General Electronics Technical Discussion 08-05-2022, 02:55 PM
Replies: 63
Views: 1,367
Posted By petehall347
Re: Another water pump automation project (suggestions ?)

is it not possible to add a balancing pipe between the tanks ? then it should only need 1 pump and float .
Forum: General Electronics Technical Discussion 08-05-2022, 02:53 PM
Replies: 63
Views: 1,367
Posted By petehall347
Re: Another water pump automation project (suggestions ?)

look possibly a cubic metre .so 1000 litres
Forum: General Electronics Technical Discussion 08-01-2022, 04:14 PM
Replies: 4
Views: 89
Posted By petehall347
Re: Battery Charger - Transformer advice

yes the buzzing is the laminations . i have in the past sprayed lacquer onto the laminations so it runs down into them .
Forum: General Electronics Technical Discussion 08-01-2022, 01:46 PM
Replies: 4
Views: 89
Posted By petehall347
Re: Battery Charger - Transformer advice

firstly tighten the screws up .
Forum: Troubleshooting Printers, Copiers, Scanners and other Imaging & Printing Devices 07-30-2022, 05:51 PM
Replies: 3
Views: 172
Posted By petehall347
Re: service tools for Canon mx 495

https://www.youtube.com/watch?v=9SrBzabJj00
Forum: General Capacitor Questions & Issues 07-28-2022, 09:45 AM
Replies: 13
Views: 267
Posted By petehall347
Re: Any good references for variable capacitor design?

i remember adding different capacitors to the earth and the antenna for selectivity and sensitivity .
Forum: General Electronics Technical Discussion 07-28-2022, 09:42 AM
Replies: 23
Views: 434
Posted By petehall347
Re: Samsung battery in Xiaomi

think it must be a mi xiaomi mi 9
Forum: Troubleshooting TVs and Video Sources 07-28-2022, 04:45 AM
Replies: 16
Views: 488
Posted By petehall347
Re: Samsung UN55ES7003 has blown fuse on TCON and short to ground.

http://j5d2v7d7.stackpathcdn.com/wp-content/uploads/2016/08/4435-datasheet-pinout.gif
Forum: General Electronics Technical Discussion 07-26-2022, 04:15 AM
Replies: 5
Views: 176
Posted By petehall347
Re: Help with IC identification please

can you find the lump that blew off ?
Forum: General Capacitor Questions & Issues 07-24-2022, 06:58 PM
Replies: 13
Views: 267
Posted By petehall347
Re: Any good references for variable capacitor design?

wish i still had the book i used all them years ago .. all simple stuff really . i used to try different windings around a ferrite core and capacitors connected to an external antenna for selectivity...
Forum: Troubleshooting TVs and Video Sources 07-24-2022, 03:45 PM
Replies: 2
Views: 245
Posted By petehall347
Re: Samsung TV UN55KS8000 dead - bad diode

if diodes are working parallel i change all of them and match vf . they really need to work together .. silly idea to run parallel to up the current really .be better with single bigger diodes . well...
Forum: General Capacitor Questions & Issues 07-24-2022, 11:21 AM
Replies: 13
Views: 267
Posted By petehall347
Re: Any good references for variable capacitor design?

when i was building crystal sets i knew nothing about pf values i just threw them together and they worked fine . i did however know the differences of am and fm tuners though .
Forum: General Capacitor Questions & Issues 07-24-2022, 07:59 AM
Replies: 13
Views: 267
Posted By petehall347
Re: Any good references for variable capacitor design?

try searching tuning capacitor on ebay and google .. i see an an abundance of them
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