The HOTS

monty_a900

Member

Donor 2011, 2013
Joined
Feb 24, 2003
Messages
357
Reaction score
3
Location
Basingstoke, United Kingdom
I've just re-capped & replaced the flyback on a 13" G07 910 (it was a G07 CBO "Bob Roberts deluxe cap kit")

I replaced the HOT (the original was missing) with a 2SD870 (I know these are really for the G07 CBO, but I didn't have a 2SD869) - everything worked fine for ~ 1 minute, before a fizzing sound, blowing F901. It just now blows F901 when I power up, I presume the HOT is now dead.

So, will a 2SD870 work in this monitor? Are there any other problems using the G07 CBO cap kit on this, I assumed to was basically compatible?

Thanks
 
A 2SD870 will work in place of a 2SD869......it's basically the same, the 870 is a bit more robust. F901.....is that the "big" fuse or the "small" fuse? Are you using an isolation transformer?

Edward
 
Do you know that the CBO (19") cap kit and the FBO (13") cap kit aren't exactly the same. That could be part of your problem...
 
There's quite a few differences between the two cap kits.

Electrohome G07-FBO 13"

1uf50V C504
1uf50V C520 BP Cap
1uf160V C523
3.3uf160V C412
4.7uf50V C408
4.7uf63V C407
10uf50V C301
10uf50V C303 Positive lead towards PCB edge
10uf250V C107/C905
33uf16V C506
47uf16V C518
47uf160V C511
100uf6.3V C701
100uf160V C411
220uf16V C302/C403/C517
600uf200V C904 B+ Filter Cap
2200uf25V C521

R908 = 47K 1/2W
R317/R314 = 390 ohm 1/4W (orange/white/brown)

Edward
 
Thanks, that helps..

There's quite a few differences between the two cap kits.

Electrohome G07-FBO 13"​

1uf50V C504
1uf50V C520 BP Cap
1uf160V C523
3.3uf160V C412
4.7uf50V C408
4.7uf63V C407
10uf50V C301
10uf50V C303 Positive lead towards PCB edge
10uf250V C107/C905
33uf16V C506
47uf16V C518
47uf160V C511
100uf6.3V C701
100uf160V C411
220uf16V C302/C403/C517
600uf200V C904 B+ Filter Cap
2200uf25V C521

R908 = 47K 1/2W
R317/R314 = 390 ohm 1/4W (orange/white/brown)

Edward
 
Still having problems with this G07 FB0.

Replaced the HOT (2SD870) three times now, after a minute F901 blows and shorts the HOT. Replace fuse & HOT, monitor works 100% (nice clear picture too) for a minute and same happens again. Just to recap what I've done;

- Bob Roberts deluxe g07 Cap kit (all correct, tripple checked)
- new fly back
- new power regulator (X04 - STR383)
- new width coil
- replaced ic501 (known working one)
- replaced X401 & X402 (with workin ones)

Any ideas?
 
Did you put a 19" flyback on it? If you still have your old 13" flyback and it isn't blown, put it back on...
 
The flyback was from the G07 kit. I thought the CBO & FBO used the same flyback? Not sure I still have it, I'll take a look.

Also, I notice X401 & X402 get *REALLY* hot (the heat sinks burns your fingers if you touch it), eventually they seem to kill the HOT & F901.
 
Back
Top Bottom