| Electronics > Repair |
| What is this part and resistor value |
| (1/3) > >> |
| Peter Tryndoch:
What is this component that looks like a diode and is labeled "TRSB1" ? My colour vision is not the best. Is the value of this shunt resistor 4R9? Hopefully the image will get attached to this post Ok. Altronics did not have a 4R9 so I went with a 5R6 5W Some history - if you're interested: This is the low voltage supply for an overly complicated clothes dryer. The shunt resistor failed. I replaced it with the 5R6 and then the control chip let out the magic smoke. I measured the DC resistance of the primary as 0R2. I rewound the transformer and now the primary measures 15R. Much better. Now waiting on delivery of replacement LNK364GN |
| fzabkar:
TRSB1 is a TVS diode (Transorb). The two numbers are wildly different parts, though. :-? http://markingcodes.com/search/c/200a http://markingcodes.com/search/c/26a See the snubber components in this example: https://www.eeweb.com/wp-content/uploads/articles-articles-flyback-transformer-design-1387179412.png |
| Peter Tryndoch:
Somehow I don't think the value of that shunt resistor is 4R9 Does anyone want to have a go at reading the colour code? Just blew another shunt, chip and transformer primary. Transformer rerewinding time - fun! Luckily I bought 10 chips. Foresight? What is my luck in getting a schematic? Device: Electrolux clothes dryer EDP2074PDW Circuit board 0194_0003 G BTW Thank you fzabkar for explaining TRSB1 |
| PA0PBZ:
Unfortunately the service manual does not have schematics but it does have a better picture of the resistor: I'd say it's 47 Ohms. (At least when that's the resistor you are referring too) |
| Peter Tryndoch:
47R sounds better. The board looks slightly different but the colours seem to match what I have found online. I have attached some more pics of the resistor. |
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