minor fire!

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Discussion

Perseverant

Original Poster:

439 posts

111 months

Tuesday 22nd November 2016
quotequote all
Haven't posted for a while now. A word of warning - use an inline fuse on a lead when using the car battery to test circuits. My Mercedes 190e wouldn't start and the pump wasn't running, so I suspected trouble at the relay. With the battery out so I could access the connector block to the relay, I discovered no live feed to it. To improve access I undid the screws that hold the block to recheck, shoved the jump cables back and was rewarded by a cloud of smoke at the relay box and under the fuse box. I thought at first I'd done more damage than was the case. The live feed was in fact the culprit and had broken off altogether when I undid the block, but was free to arc around merrily when I reconnected the battery. Anyhow, some careful soldering and threading wires around solved the damage, and resetting the CD player fixed that too. Also, on the bench, the relay didn't work, so fitted a new one at some expense. Car starts and runs fine, in fact it starts better than ever so I must have inadvertently cured some thing else as well.

Penelope Stopit

11,209 posts

109 months

Tuesday 22nd November 2016
quotequote all
Good advice, a technician always does fuse jumped power supplies
Good that you broke lucky and didn't burn the whole loom out

S0 What

3,358 posts

172 months

Tuesday 22nd November 2016
quotequote all
That's what power probes were invented for, i never use anything else to test or jump anything on a car, even a lowly sealy jobbie is better than blindly stuffing 12V into a suspect item, and has a resettable trip inside.
http://www.ebay.co.uk/itm/like/160753828712?lpid=1...

Penelope Stopit

11,209 posts

109 months

Tuesday 22nd November 2016
quotequote all
S0 What said:
That's what power probes were invented for, i never use anything else to test or jump anything on a car, even a lowly sealy jobbie is better than blindly stuffing 12V into a suspect item, and has a resettable trip inside.
http://www.ebay.co.uk/itm/like/160753828712?lpid=1...
Thanks for the post

This power probe looks interesting, I have no use for one as I have moved on from testing etc but I know a man that would use one
Am I right in thinking that this power probe will allow the user to power up most circuits with the knowledge that it will trip out when there is a short circuit?
What are the limitations of this probe? What is the Max current carrying capacity?
Are these probes made as different models for different current ratings?

Thank you in advance

S0 What

3,358 posts

172 months

Tuesday 22nd November 2016
quotequote all
Penelope Stopit said:
S0 What said:
That's what power probes were invented for, i never use anything else to test or jump anything on a car, even a lowly sealy jobbie is better than blindly stuffing 12V into a suspect item, and has a resettable trip inside.
http://www.ebay.co.uk/itm/like/160753828712?lpid=1...
Thanks for the post

This power probe looks interesting, I have no use for one as I have moved on from testing etc but I know a man that would use one
Am I right in thinking that this power probe will allow the user to power up most circuits with the knowledge that it will trip out when there is a short circuit?
What are the limitations of this probe? What is the Max current carrying capacity?
Are these probes made as different models for different current ratings?

Thank you in advance
The sealy one i have (PP1) will click out internaly at a short and reset when cooled down (approx 2 seconds) all it states is 6-24V but it will run a cooling fan for mins with no issue ?, and the LEDs are quick enough to use as a noid light if needed wink cheaper ones have a popout reset button, the more expensive ones (PP7) have a screen which shows actuall voltage the one in the link below does even more, my partner has one and it's great but more than i need for what i do smile
http://www.ebay.ie/itm/VSP200-Power-Probe-Circuit-...

Penelope Stopit

11,209 posts

109 months

Wednesday 23rd November 2016
quotequote all
Thanks for the reply with Info, I am well impressed with this kit and may be buying someone a present in the near future