Hi Bitin.
I've been trawling a lot of forums looking for answers to my own 'trim' question, and found many a mention of the relays going faulty. I also recall that they ain't the most expensive of parts (that's nice for a change...) costing around £17 each or something, I think, whereas the actual switches come in at twice that...
Darned if I can find the post that mentioned where to get the relays tho'... Sorry.
Shouldn't be hard to find, tho', I wouldn't have thought.
Re-reading your first post, there are some things one can assume (tho
not for definite). Like, if BOTH switches fail to make the trim motor work, then it's a reasonable assumption that it
ain't the switches that are at fault. They work
independently of each other, so if one fails, the other should still operate.
Obviously what they do then have in common is shared wiring (inside the engine cowl) and a shared relay. So that would suggest the relay as being the most likely candidate for being faulty.
But this ain't at all conclusive, of course...!
You suggest you aren't up to sorting this yourself? Fair enough - leccy can be scary stuff
But perhaps one thing you could try is to pull off the connectors on each relay in turn and see what condition they are in - any corrosion on them?
If you are inspired by this success and want to go further, then you briefly reconnect your battery and try a quick up and down test. (Obviously if your engine is in the fully lowered position, it ain't gonna go down further... ) Note the results. Then swap the two relays around and retry. Report back your findings. (But don't leave the battery connected afterwards. And if it sparks a lot when you connect it up, then perhaps don't proceed any further either...)
The most 'likely' overall candidate is an internal fault in one relay. Or both.
Although the issue you initially had was not being able to
raise the engine, this doesn't necessarily mean that it's the 'up' relay that's faulty; it could possibly be the 'down' relay having a partial 'short' inside due to corrosion, and this was acting 'against' the up relay, countering its operation. When your 'up' trim switch then decided to start working, it could have been due to the 'down' relay momentarily going 'good' again!
But - this is all guesswork
Let us know what your repair guy finds.