omerfbingol
New Member
Hello everyone,
I have here a Grundig ST 70-702 TOP Television (CUC 2032) that keeps blowing the SI62501 numbered (2.5 A) fuse as soon as the POWER button is pressed. There seems to be no other blown/burnt component on the board.
The fuse can be seen, on service manual's page 26 (section 3-4) at coordinates X:270, Y:75. I marked it with a red rectangle on the photo.
I have no experience in TV repair, other than fixing some cold solders. I referred to the service manual, looking for a predetermined repairing sequence related to this particular fuse, but it appears that I'll need to find out the solution by trial, based on professional repairing experience, which I have none.
This TV belongs to my grandpa and it would be nice if this thing wouldn't go to trash: that's why I'm clinging onto it![Smile :) :)](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
The error occured first at a rural town with a poorly regulated grid, making it plausible that the fuse was blown because of high voltage, so I first thought that simply replacing the fuse will work, but it didn't. It kept blowing 2 more fuses I put in.
Could anyone point me towards a possible solution?
![IMG_20190908_192939 (Large).jpg IMG_20190908_192939 (Large).jpg](https://www.electro-tech-online.com/data/attachments/109/109716-109d563d91042ee27d2e091899bd6ccd.jpg)
![IMG_20190912_094353 (Large).jpg IMG_20190912_094353 (Large).jpg](https://www.electro-tech-online.com/data/attachments/109/109717-4946b42a7ecd309c52cc01a9025630bc.jpg)
Thanks in advance.
I have here a Grundig ST 70-702 TOP Television (CUC 2032) that keeps blowing the SI62501 numbered (2.5 A) fuse as soon as the POWER button is pressed. There seems to be no other blown/burnt component on the board.
The fuse can be seen, on service manual's page 26 (section 3-4) at coordinates X:270, Y:75. I marked it with a red rectangle on the photo.
I have no experience in TV repair, other than fixing some cold solders. I referred to the service manual, looking for a predetermined repairing sequence related to this particular fuse, but it appears that I'll need to find out the solution by trial, based on professional repairing experience, which I have none.
This TV belongs to my grandpa and it would be nice if this thing wouldn't go to trash: that's why I'm clinging onto it
The error occured first at a rural town with a poorly regulated grid, making it plausible that the fuse was blown because of high voltage, so I first thought that simply replacing the fuse will work, but it didn't. It kept blowing 2 more fuses I put in.
Could anyone point me towards a possible solution?
![IMG_20190908_192939 (Large).jpg IMG_20190908_192939 (Large).jpg](https://www.electro-tech-online.com/data/attachments/109/109716-109d563d91042ee27d2e091899bd6ccd.jpg)
![IMG_20190912_094353 (Large).jpg IMG_20190912_094353 (Large).jpg](https://www.electro-tech-online.com/data/attachments/109/109717-4946b42a7ecd309c52cc01a9025630bc.jpg)
Thanks in advance.
Last edited: