Dansette Conquest auto mk2 (Actually a mk1). - Page 4 - UK Vintage Radio Repair and Restoration Discussion Forum

Skintin · 14th May 2016, 11:41 am

i did measure using ground but i will check findings again

Station X · 14th May 2016, 11:44 am

Components connected to pin 9 should be C4 and R6. What looks like a vacant hole in the track leading to pin 9 may indicate a missing lead or it could be a badly soldered connection. I'll wager it's R6.

Skintin · 14th May 2016, 11:45 am

The only one that has changed is pin 3 now measuring 16.8mV. The rest are around their initial readings albeit with a little fluctuation.

Station X · 14th May 2016, 11:46 am

See posts #59 and #62.

peter_sol · 14th May 2016, 11:56 am

Left hand bottom corner looks like a bad joint to the print earth.
may account for readings. And the multiple cap could do with soldering properly.
Just to the left of pin 9 is a joint which possibly is R6 but whatever it is its lead needs pushing through the hole and soldering. As has already been mentioned in post 62.
Then you may have voltage on the anode of the triode.

Skintin · 14th May 2016, 12:24 pm

Desoldered that joint and snipped the leg on the resistor and it's reading 2.502k ohms.

Station X · 14th May 2016, 12:26 pm

2.5k is way too low for R6. Change it for a 220k.

Station X · 14th May 2016, 12:29 pm

Err... Something's not right here. If R6 was 2.5k and the joint was good there'd be a lot more volts on pin 9.

Colour code of R6 should be red, red, yellow.

Skintin · 14th May 2016, 12:39 pm

OK. Found that resistor colour and it's sitting at open circuit!

peter_sol · 14th May 2016, 12:40 pm

R5 is 2.2K to pin 8. we are talking about pin 9 and the hole to the right of it in your photo. R6 should be soldered there.

Station X · 14th May 2016, 12:44 pm

I agree, but I'm confused as to why the OP both desoldered and snipped the lead of a resistor which wasn't even mentioned.

R5 (red, red, red) is in spec by the way. Refit it.

Station X · 14th May 2016, 12:46 pm

Quote:

Originally Posted by Skintin

OK. Found that resistor colour and it's sitting at open circuit!

That'll be the problem then, or one of them at least.

Skintin · 14th May 2016, 12:48 pm

Sorry I misread the schematic. I didn't realise there was also 2.2k R5. At least it working.

R6 definitely open circuit after snipping leg.

Skintin · 14th May 2016, 12:51 pm

Haha...graham is there more!
this could be a long 16 weeks off work!

Station X · 14th May 2016, 12:51 pm

You don't need to snip the leg of a resistor to test whether it's open circuit.

Is the player now working?

peter_sol · 14th May 2016, 12:52 pm

Do you have a 220K resistor to try or replace?

Skintin · 14th May 2016, 12:54 pm

No Graham. I have to wait for the chauffeur (the wife) to come in from work. I will have to pop down to Maplin to get the resistor mentioned.

Station X · 14th May 2016, 12:56 pm

I'll go and play with my MagnetaTime amp then.

Skintin · 14th May 2016, 12:56 pm

i have only a 1k ohms resistor to hand

Skintin · 14th May 2016, 12:59 pm

hold on graham....just found some 100r 1w resistors...that should the job.

14th May 2016, 11:41 am	#61
Skintin Retired Dormant Member Join Date: Jan 2016 Location: Newcastle upon Tyne, Tyne & Wear, UK. Posts: 124	Re: Dansette Conquest auto mk2 (Actually a mk1). i did measure using ground but i will check findings again

14th May 2016, 11:45 am	#63
Skintin Retired Dormant Member Join Date: Jan 2016 Location: Newcastle upon Tyne, Tyne & Wear, UK. Posts: 124	Re: Dansette Conquest auto mk2 (Actually a mk1). The only one that has changed is pin 3 now measuring 16.8mV. The rest are around their initial readings albeit with a little fluctuation.

14th May 2016, 11:46 am	#64
Station X Moderator Join Date: Jan 2003 Location: Ipswich, Suffolk, IP4, UK. Posts: 21,288	Re: Dansette Conquest auto mk2 (Actually a mk1). See posts #59 and #62. __________________ Graham. Forum Moderator Reach for your meter before you reach for your soldering iron.

14th May 2016, 11:56 am	#65
peter_sol Octode Join Date: Aug 2003 Location: Welwyn Garden City, Herts. UK. Posts: 1,906	Re: Dansette Conquest auto mk2 (Actually a mk1). Left hand bottom corner looks like a bad joint to the print earth. may account for readings. And the multiple cap could do with soldering properly. Just to the left of pin 9 is a joint which possibly is R6 but whatever it is its lead needs pushing through the hole and soldering. As has already been mentioned in post 62. Then you may have voltage on the anode of the triode. Last edited by peter_sol; 14th May 2016 at 12:11 pm.

14th May 2016, 12:24 pm	#66
Skintin Retired Dormant Member Join Date: Jan 2016 Location: Newcastle upon Tyne, Tyne & Wear, UK. Posts: 124	Re: Dansette Conquest auto mk2 (Actually a mk1). Desoldered that joint and snipped the leg on the resistor and it's reading 2.502k ohms.

14th May 2016, 11:44 am	#62
Station X Moderator Join Date: Jan 2003 Location: Ipswich, Suffolk, IP4, UK. Posts: 21,288	Re: Dansette Conquest auto mk2 (Actually a mk1). Components connected to pin 9 should be C4 and R6. What looks like a vacant hole in the track leading to pin 9 may indicate a missing lead or it could be a badly soldered connection. I'll wager it's R6. __________________ Graham. Forum Moderator Reach for your meter before you reach for your soldering iron.

14th May 2016, 12:26 pm	#67
Station X Moderator Join Date: Jan 2003 Location: Ipswich, Suffolk, IP4, UK. Posts: 21,288	Re: Dansette Conquest auto mk2 (Actually a mk1). 2.5k is way too low for R6. Change it for a 220k. __________________ Graham. Forum Moderator Reach for your meter before you reach for your soldering iron.

14th May 2016, 12:29 pm	#68
Station X Moderator Join Date: Jan 2003 Location: Ipswich, Suffolk, IP4, UK. Posts: 21,288	Re: Dansette Conquest auto mk2 (Actually a mk1). Err... Something's not right here. If R6 was 2.5k and the joint was good there'd be a lot more volts on pin 9. Colour code of R6 should be red, red, yellow. __________________ Graham. Forum Moderator Reach for your meter before you reach for your soldering iron.

14th May 2016, 12:39 pm	#69
Skintin Retired Dormant Member Join Date: Jan 2016 Location: Newcastle upon Tyne, Tyne & Wear, UK. Posts: 124	Re: Dansette Conquest auto mk2 (Actually a mk1). OK. Found that resistor colour and it's sitting at open circuit!

14th May 2016, 12:40 pm	#70
peter_sol Octode Join Date: Aug 2003 Location: Welwyn Garden City, Herts. UK. Posts: 1,906	Re: Dansette Conquest auto mk2 (Actually a mk1). R5 is 2.2K to pin 8. we are talking about pin 9 and the hole to the right of it in your photo. R6 should be soldered there.

14th May 2016, 12:44 pm	#71
Station X Moderator Join Date: Jan 2003 Location: Ipswich, Suffolk, IP4, UK. Posts: 21,288	Re: Dansette Conquest auto mk2 (Actually a mk1). I agree, but I'm confused as to why the OP both desoldered and snipped the lead of a resistor which wasn't even mentioned. R5 (red, red, red) is in spec by the way. Refit it. __________________ Graham. Forum Moderator Reach for your meter before you reach for your soldering iron.

14th May 2016, 12:48 pm	#73
Skintin Retired Dormant Member Join Date: Jan 2016 Location: Newcastle upon Tyne, Tyne & Wear, UK. Posts: 124	Re: Dansette Conquest auto mk2 (Actually a mk1). Sorry I misread the schematic. I didn't realise there was also 2.2k R5. At least it working. R6 definitely open circuit after snipping leg.

14th May 2016, 12:51 pm	#74
Skintin Retired Dormant Member Join Date: Jan 2016 Location: Newcastle upon Tyne, Tyne & Wear, UK. Posts: 124	Re: Dansette Conquest auto mk2 (Actually a mk1). Haha...graham is there more! this could be a long 16 weeks off work!

14th May 2016, 12:52 pm	#76
peter_sol Octode Join Date: Aug 2003 Location: Welwyn Garden City, Herts. UK. Posts: 1,906	Re: Dansette Conquest auto mk2 (Actually a mk1). Do you have a 220K resistor to try or replace?

14th May 2016, 12:54 pm	#77
Skintin Retired Dormant Member Join Date: Jan 2016 Location: Newcastle upon Tyne, Tyne & Wear, UK. Posts: 124	Re: Dansette Conquest auto mk2 (Actually a mk1). No Graham. I have to wait for the chauffeur (the wife) to come in from work. I will have to pop down to Maplin to get the resistor mentioned.

14th May 2016, 12:56 pm	#78
Station X Moderator Join Date: Jan 2003 Location: Ipswich, Suffolk, IP4, UK. Posts: 21,288	Re: Dansette Conquest auto mk2 (Actually a mk1). I'll go and play with my MagnetaTime amp then. __________________ Graham. Forum Moderator Reach for your meter before you reach for your soldering iron.

14th May 2016, 12:59 pm	#80
Skintin Retired Dormant Member Join Date: Jan 2016 Location: Newcastle upon Tyne, Tyne & Wear, UK. Posts: 124	Re: Dansette Conquest auto mk2 (Actually a mk1). hold on graham....just found some 100r 1w resistors...that should the job.