| Electronics > Repair |
| Fridge Freezer Board Repair - Transistor |
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| Wobbly0199:
Hi, Yes i have resoldered most of the joints. Cleaned the POT etc. |
| factory:
--- Quote from: floobydust on August 14, 2024, 09:57:24 pm ---Intermittent operation of fridge control boards can be the dropper cap aging, as well as the 470uF going bad. "Eating from tins and packets" I'm not sure what that means, tinfoil everywhere, beer being splashed on the board? :popcorn: Isn't the board covered or something? --- End quote --- I read it as this; "My fridge freezer controller board went faulty. Eating from tins and packets (DOH!)." Presumably they are eating tinned food & dry food from packets, as fridge is "intermittent". "Providing the make/model of the fridge would help others." Make is given in the picture, Servis are now just another zombie brand these days. https://en.wikipedia.org/wiki/Servis The Quartz washing machine on the wiki page looks very familiar, we had one for several decades, the much newer replacement Servis was a PoS, lasted barely a year before the bearings failed. This fridge/freezer could be either Italian or Turkish (Vestel), board doesn't look old enough to be from the original company. David |
| floobydust:
No idea WTF the fridge is doing, OP could communicate better and elaborate on "intermittent" or why the little triac area on the board looks to have soot there. I thought it was just for the lamp? Posting the make/model/board number helps others as the search engines will index the thread. Also to find the fridge schematic for the connector pin wiring. I looked at Servis and found many different board. These appliances are made by some mega-conglomerate and the same board used in many different brands. pic looked the same on reddit p/n 546089001. |
| factory:
Looking at the back off the board in this video, I would say the small triac is only switching to the lamp too. Don't do what they have done, the resistor before the capacitor dropper should be the same rating as the original. :palm: Also seems to be a different version, as it's got some different parts populated. Date codes on the older boards are consistent with the Italian maker, could be anywhere from 10 to 16 years old, have you verified the capacitive dropper based power supply is good? if it isn't then there is no point looking at the other parts. David |
| Wobbly0199:
"capacitive dropper based power supply" - Which component is that? i assume it's the blue rectangle (in my image). NOTE to all: The intermittence issue is that the compressor sometimes starts normally, sometimes it attempts to start and stops within half a second. Fiddling with the temperature control turning up/down sometimes makes it come on when it has stopped. |
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