Thandar TG503 service manuals?

[mikeys]

I purchased a TG503 off of ebay recently, mostly just because I've used one (or one of it's siblings) in the Uni labs for a while and they seem alright, and the price it was going for was under half of what the refurb places are selling this model for in the UK. Anyway, it appears faulty and I'm struggling to find a service manual online. Does anyone have any documents for these?

[alanb]

Have you tried   http://www.ttid.co.uk/support

[mikeys]

Thanks for the suggestion, I hadn't thought to look at the manufacturer's site since it's an old product. They had nothing available on the website but I've sent them a request in case they have anything available that's not on show.

[MrSlack]

If you send them a req they usually reply with a ZIP with a PDF in it with service information. TTI are pretty good at this

[Fraser]

The TG503 manual is only available in paper form from TTi. They charge a 'no profit' fee of £25 for the manual.

The TG502 service manual can also be used to aid repairs on a 503.

I have A 503 in my pile of kit that I will be selling. Just scratchy pots need sorting with a clean.

Fraser

Correction ---- TTi do not have a copy of the TG503 service manual. They supply the similar TG501 service manual pdf for free

[MrSlack]

I'd have that off you if it was one of their sweep gens

[Fraser]

This thread may be of help/interest.

It provides links to the only available service data, now stored at the KO4BB site.

https://www.eevblog.com/forum/reviews/elderly-thurlby-thandar-tg502-functionsweep-generator/


TG501 SM

http://www.ko4bb.com/getsimple/index.php?id=download&file=06_Misc_Test_Equipment/Thurlby_TTi/Thurlby_Thandar_TTi_TG501_Function_Generator_Service_Manual-TG501ServiceManual.pdf

TG502 Schematic

http://www.ko4bb.com/getsimple/index.php?id=download&file=06_Misc_Test_Equipment/Thurlby_TTi/Thurlby_Thandar_TTi_TG502_Function_Generator_with_Sweep_Service_Manual-TG502MainandSweepdiagrams.pdf

Fraser

[Saturn]

From Same site as above TG 503 Circuit Diagrams -

http://www.ko4bb.com/manuals/80.229.192.65/Thurlby_TG-503_Function_generator_with_pulse_generator_Service_Manual.zip

Did you find a Service Manual ?, I have one but the Sine & Ramp functions don't seem to work, Rest look OK

[mikeys]

Saturn,

I couldn't find the specific service manual for the model but tti sent me what they could, and I'm pretty sure I uploaded that to one of the archive sites. Mine had something like a blown op amp in the output stage and I ended up sending it back to the seller, as I didn't have access to my tools at the time. From what I remember the schematic was fairly easy to figure out.

I'll dig about in my emails and see if I can find the material TTI sent me, but can't promise anything since my mailboxes are absolutely tragic.