Welcome, Guest.
Please login or register.
ROWA RTM805.
HCSD Industry Forum    Fault Assistance    Television  ›  ROWA RTM805.
Users Browsing Forum
Yahoo! Bot and 1 Guests

ROWA RTM805.  This thread currently has 344 views. Print
2 Pages 1 2 » All Recommend Thread
teknorat
June 30, 2009, 5:48pm Report to Moderator
Good Industry experience
Posts: 108
Posts Per Day: 0.13
high guys,I have the above model in with C458 exploded and R446 o/c, could anyone tell me these values before i have to wait for a circuit,    also does anyone know where i can get parts for MAGNAVOX 80 cmTVs?i need the set of plastic fingers inside front cabinet i need a remote (have been unable to sucessfuly find a universal to suit it),thanks in advance from russell.
Logged Offline
E-mail Private Message
Col
June 30, 2009, 10:09pm Report to Moderator
almost an Industry Specialist
Posts: 308
Posts Per Day: 0.32
Location: Lake Macquarie
Can't help with the Rowa but DJ Electronics are the agents for Magnavox I believe, 0397692307.
Logged Offline
Private Message Reply: 1 - 15
teknorat
July 10, 2009, 6:31pm Report to Moderator
Good Industry experience
Posts: 108
Posts Per Day: 0.13
thanks col ,i will give them a call,russell.
Logged Offline
E-mail Private Message Reply: 2 - 15
Micktek
July 11, 2009, 2:07am Report to Moderator

Consultant
Administration Group
Posts: 1,135
Posts Per Day: 0.81
Where are these parts located? What component are they connected too?
I have schematic, but cant find them.
Logged
Private Message Reply: 3 - 15
Mactronic
July 29, 2010, 8:40am Report to Moderator
Baby Member
Posts: 21
Posts Per Day: 0.02
R456 is what I think you are referring to which is 10 ohms and the capacitor is 6.8 uF 100v bipolar.  On the same set I can not identify R821. Measuring 9.1k but looks like
it may be 13k or something, colours burned almost off.
Logged Offline
E-mail Private Message Reply: 4 - 15
cliff
July 29, 2010, 9:58pm Report to Moderator
Baby Member
Posts: 36
Posts Per Day: 0.04
HI  acording to my rowa rtm805 cct, r821 is 12k  across c822. hope this helps    cliff
Logged Offline
E-mail Private Message Reply: 5 - 15
Geoff
July 30, 2010, 12:10am Report to Moderator
Industry Specialist
Posts: 552
Posts Per Day: 0.39
Hi all, by memory, this set is similar to the 80cm teac unit around at the same time, most faults would be the same. Regards. Geoff
Logged Offline
E-mail Private Message Reply: 6 - 15
Mactronic
July 30, 2010, 1:08am Report to Moderator
Baby Member
Posts: 21
Posts Per Day: 0.02
Thank you all, muchly.
Logged Offline
E-mail Private Message Reply: 7 - 15
Graham
July 30, 2010, 8:38am Report to Moderator
almost an Industry Specialist
Posts: 334
Posts Per Day: 0.36
All of the rowa tvs around that era are Teac sets, many very similar to TCL chassis's.

The guy who owned the Rowa name left teac a few years ago and took the name. Pretty sure I've seen it pop up again lately but on sets from non tv related outlets if you get my drift. They are no longer like or anything to do with teac.
Logged Offline
Private Message Reply: 8 - 15
Mactronic
August 2, 2010, 12:19am Report to Moderator
Baby Member
Posts: 21
Posts Per Day: 0.02
Good morning lads, have fixed this set but could not readily obtain C458 6.8uF 100v cap.
Had 4.7uF in stock so used that, better than the piece of wire that was there. Seems not
to affect anything, had to adjust geometry, slight pincushion. Can anyone forsee a problem with this ??
Logged Offline
E-mail Private Message Reply: 9 - 15
rrobor
August 2, 2010, 8:29am Report to Moderator
almost an Industry Specialist
Posts: 308
Posts Per Day: 0.24
Yep I think I will be the baddy.  From memory these are these rotten  things that pass high current like in Sharps etc Use a standard type and it fails in a couple of weeks. What I do is use standard caps, sure its big and bulky but it doesnt bounce. A couple of 3.3uF and its fine.
Logged Offline
E-mail Private Message Reply: 10 - 15
Mactronic
August 3, 2010, 2:57am Report to Moderator
Baby Member
Posts: 21
Posts Per Day: 0.02
Thanks rrobor,  I figured that may be the case but had hoped to keep time down. Working without a circuit sometimes is challenging especially with older sets. There is not much room there with that heat sink in the way. Better to not see it again.
Logged Offline
E-mail Private Message Reply: 11 - 15
Mactronic
August 4, 2010, 1:49am Report to Moderator
Baby Member
Posts: 21
Posts Per Day: 0.02
Well what can I say do the right thing and it puts you further in the poo. Replaced that cap
with 2x3.3 which read 6.9 on the bridge and guess what it is worse pincushion. I have contacted Bill in the service mode forum and apparently this set requires a teac service remote. I will see locally if there is one available. But interesting that the 4.7 uF BP(NP) reduces the pincushion considerably, maybe I should go to 3.3 and see. Miracle suggestions gladly accepted ?
Logged Offline
E-mail Private Message Reply: 12 - 15
JTEL Electronics
August 4, 2010, 8:10am Report to Moderator

Admin Group
Posts: 864
Posts Per Day: 0.61
Hi, did you use 3.3uf NP caps or 3.3uf polarised caps.
Seen this in the Sharp sets, eventually i used 4.7uf 2000v poly caps.
Worked a treat
Cheers
Joe
Logged Offline
Private Message Reply: 13 - 15
bill pace
August 4, 2010, 8:39am Report to Moderator
Consultant
Administrator Group
Posts: 1,597
Posts Per Day: 1.17
Location: brisbane
EFIL  says for pincushion (replace C458) but also says replace R510 (10 ohm) and V452 (BC548) + V456 (BC558) even though they'll likely measure OK.
Logged Offline
Private Message Reply: 14 - 15
2 Pages 1 2 » All Recommend Thread
Print

HCSD Industry Forum    Fault Assistance    Television  ›  ROWA RTM805.